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Khet Second Life Edition

Khet game logo. Copyright by Innovention Toys, LLC.
Example of a Khet game in progress.
Visual reference of Khet game pieces.


Khet is fun and easy to learn because all the pieces move in the same way. The object of the game is to destroy your opponent's Pharaoh by bouncing your laser beam off the mirrored pieces and around the playing field. You can learn how to play in minutes!

Khet SecondLife Edition is an officially licensed version of Khet by Innovention Toys, LLC. Copyright (C) 2005-06. All rights reserved.

The real life board game of Khet is no longer produced, and licensing for it has been sold to ThinkFun, Inc. ThinkFun now produces the game under the name "Laser Chess" and is available for purchase on their website at as well as other online retailers.


See the Purchasing page for information on obtaining this product in Second Life.


That's right! As an owner of Khet Second Life Edition, you are entitled to free updates to future versions of Khet for as long as you own the product (and as long as Second Life exists). Simply touch the game board and click Settings->Update to check for new updates.

Khet 1.0 VS Khet 2.0

When choosing a starting board configuration you will be able to choose from "Khet 1.0" or "Khet 2.0" setups. Many of these setups may appear very similar, and indeed they are.

Khet is based on a real game, also called Khet (, formerly known as Deflexion. For our purposes, Deflexion is the same as Khet 1.0. This original version of Khet contained Obelisks guarding the Pharaohs and featured fixed lasers as part of the game board. These fixed lasers in Khet 1.0 always fired across your protected home row, and to turn them out onto the playing field you needed to use a mirrored piece, typically a Pyramid. The Obelisks in Khet 1.0 are basically ablative armor for the Pharaoh. They can take one hit, and then they're gone. For this reason, they could be stacked to double up on their protection value. You have to hit a stack Obelisk twice to fully eliminate it, thus exposing the Pharaoh. This original Khet game was simply known as "Khet", the "Khet 1.0" label came later in order to distinguish it from the revised version.

A revised version of Khet was released several years after the original debut of Khet. At this point, the original Khet became known as "Khet 1.0" and the new revised version became known as "Khet 2.0." Players who have only experienced Khet in Second Life up to now have been playing "Khet 1.0." In the revised Khet 2.0 the Obelisks have been replaced with an Anubis piece. This Anubis piece serves the same purpose as the Obelisks (bodyguard to Pharaoh), but are impervious to damage from the front. An Anubis can be hit any number of times by the laser and still survive as long as it is hit on the front. Hitting an Anubis on the rear or sides will eliminate it. In addition to replacing the Obelisks, the new Khet 2.0 features a new piece called the Sphinx. The Sphinx takes the place of the old fixed board lasers on the original Khet, putting the laser inside a piece instead. This piece can be rotated to fire the laser across your home row like Khet 1.0, or turned to fire the laser across the playing field. The Sphinx cannot be moved.

In summary, Khet 1.0 setups feature a fixed laser and Obelisks. Khet 2.0 setups feature a rotating laser (the Sphinx) and Anubis pieces. The board setups will otherwise be the same.

Also note that the version of Khet in Second Life (e.g. "Khet Board v3.0") has no relation to the "Khet 1.0" or "Khet 2.0" moniker used above. "Khet 1.0" vs "Khet 2.0" is related to rules revisions, while the version number of the board in Second Life is related to software revisions.

Game Play

Khet is for only two players. Players may withdraw and be replaced at any time by other players. To play Khet, simply click on the board. You will be presented with a menu.

  • To start the game, you must click Setup on the menu and choose a starting board layout. Then both players must choose Play to join the game.
  • Players take turns, each player moving only his/her own pieces. Silver always moves first. All the pieces can be either turned, or moved, or both, including the Pharaoh. The current turn is indicated by the color of the game board edge.
  • A turn consists of moving a piece one square in any direction (including diagonally) or of rotating a piece 90 degrees without changing squares. A piece cannot be moved and rotated on the same turn or rotated more than 90 degrees on one turn. To do this, simply touch the piece you wish to move or rotate. A control pad will appear over the top of the piece that you touched. Some pieces can only be rotated, some can only be moved, and some can be moved OR rotated.
  • No red piece can move into the squares marked with a silver Ankh, and no silver piece can move into the red Eye squares.
  • Except for the Scarab (formerly known as Djed) and Horus pieces (see the visual piece guide above), no piece can move into a square occupied by another piece.
  • When a player has moved, either by rotating or moving a playing piece, their laser is automatically fired, sending the beam around the field. The laser can not be 'test fired' to see where it will hit. All moves are final. The laser will always bounce off of mirrors at 90 degree angles.
  • When the laser is fired, it will stop either at the edge of the board or on the non-mirrored surface of one of the pieces. If it stops on a Pharaoh, the player whose Pharaoh is destroyed loses the game. If it stops on any other piece, that piece is removed from the board (even if it is the player's own piece). The laser is fired only once a turn. The turn is over whether a piece is hit or not.
  • The game ends when the laser hits a Pharaoh. The winner is the player whose Pharaoh wasn't hit. A player who hits his or her own Pharaoh is out of luck. If (when using the Beamsplitter expansion) you manage to destroy both your own Pharaoh AND your opponent's Pharaoh at the same time, you still lose because you killed yourself. The game board will be consumed by the color of the winner, to indicate that the territory disputed by the two rulers has been conquered by one.

Extra Game Play for Khet 1.0 Setups

  • The Scarab/Horus piece can move into a square occupied by Pyramid or Obelisk of either color. The Pyramid or Obelisk then goes to the square the Scarab/Horus piece started from. In other words, the Scarab and Horus pieces can swap places with an adjacent Pyramid or Obelisk, but not with an adjacent Pharaoh, Scarab, or Horus. Neither piece rotates when swapping places.
  • The Obelisks have the power to stack or unstack on top of each other. In the stacked configuration the player may either move the stacked Obelisks as one unit one square in any direction or unstack the top Obelisk moving it one square in any direction while leaving the bottom Obelisk in its place. If a stacked Obelisk is hit, only the top Obelisk is removed from play leaving the bottom Obelisk to remain in its position on the board. You can only stack once, so there are no triple or quadruple stacks allowed. Only Obelisks of the same color may be stacked.

Extra Game Play for Khet 2.0 Setups

  • The Scarab/Horus piece can move into a square occupied by Pyramid or Anubis of either color. The Pyramid or Anubis then goes to the square the Scarab/Horus piece started from. In other words, the Scarab and Horus pieces can swap places with an adjacent Pyramid or Anubis, but not with an adjacent Pharaoh, Scarab, Horus, or Sphinx. Neither piece rotates when swapping places.
  • The Anubis pieces are impervious to the laser from the front. If a laser hits the front of an Anubis, it will NOT be destroyed. If the laser hits the rear or sides of an Anubis, it will be destroyed.
  • Sphinx pieces can be rotated, but cannot be moved. The Sphinx can only point across or down the board, it can never be pointed off of the board.

Eye of Horus Beamsplitter Expansion

To use the Eye of Horus Beamsplitter Expansion, choose a setup that ends in "b" such as "Classic 2b."

The Eye of Horus pieces look and behave exactly like Scarab pieces, except that they have the Eye of Horus on top instead of a Scarab beetle. When a laser hits an Eye of Horus, it will be split into two laser beams. The beam can be split multiple times by passing through Eye of Horus pieces multiple times. Each laser split has the chance of destroying a piece.


Khet board owners can touch the Khet game and choose "Settings" from the menu to change options on the game. The following options are available:

  • Timeout On: Enable game timeout. Game will automatically reset after an hour of no moves being made.
  • Timeout Off: Disable timeout option.
  • Quiet On: Disable some of the game's local chat output so it is less spammy.
  • Quiet Off: Allow all local chat from the game.
  • Scale: Resize the game board from 1m to 30m in size. WARNING: Like all mesh objects, the land impact of the game will increase as it gets bigger, and decrease as it gets smaller! After the game reaches ~6m in size, it will enable physics on all of the game pieces so they can be collided with.
  • Colors: Change the colors of the playing pieces. Khet by default has silver and ruby pieces. Other options include Deflexion colors (silver and gold), Nile colors (orange and blue) and Royal colors (green and purple).
  • Update: Check for newer versions of Khet.

Land Impact

Like all mesh objects, Khet's Land Impact (or Prim Equivalence) is determined by how large it is. At the default size of 3 meters (longest edge of the board) it is 32 LI. This may seem like a lot, but it is actually LESS than the old non-mesh Khet. The old Khet board is 13 prims when not in use, but adds an extra 28 prims during a game, making it 41 Land Impact. By contrast, the mesh version of Khet is now 32 prims when a game is in progress.

The game can be resized down to a minimum of 1m in size (the same size as the old Khet) or up to as much as 30m in size (the size of a house). As Khet gets bigger, it will have a greater land impact. At house size it will be as much as 200 Land Impact during a game, depending on which setup you load. When the game passes 6 meters in size, it will automatically enable collision physics on all of the playing pieces. The collision physics are disabled when the board is smaller to prevent the physics calculations from increasing the game's land impact.

Frequently Asked Questions (FAQ)

Purchases & Replacements

Wiki FAQ Q Icon.png My object got returned, and now it is gone, it never came back! Can I get a replacement?

  • Your object is probably not actually lost, just hidden! This is a feature of Second Life. When more than one object gets returned from a parcel at the same time, then Second Life does not send them back to your inventory as individual objects. Instead, it will bundle them all together into a single package. This package/bundle will appear in your Lost and Found folder as one inventory item, even if there are 5, 10 or 100 objects actually inside of it. The bundle/package will only show the name of the FIRST item in the bundle while it is in your inventory. To see what else is inside this bundle you will have to rez it. We recommend finding a sandbox to do this in to be sure that there are enough prims available for whatever happens to be inside the bundle. Some additional things to look out for:
    • Because bundles only show the name of the FIRST item in the bundle and nothing else, this means that the inventory search bar at the top of your inventory window will not help you, as it cannot search inside of bundles.
    • Bundles should have a different icon next to them than single objects do. This is often represented as a stack of smaller boxes, rather than a single large box.
    • If you can't find your missing objects, you should try clearing your inventory cache in your viewer preferences. This is usually under the "Network & Files" or "Network & Cache" tabs in most viewers. Look for the "Clear Inventory Cache" button, not the standard "Clear Cache" button as that only clears texture caches. You will have to close and restart Second Life after clearing your inventory cache.
    • Returned objects NEVER go back to their creator, they only go back to their OWNER. This is a false rumor. Second Life simply does not work that way, nor has it ever.
    • As a general rule, you should never return anything that you want to keep. Return is for taking out the trash, it's like a bulldozer clearing a lot for new construction. It is not a tool of finesse, and is known to eat objects. Always remember to properly TAKE things that you care about, and only RETURN if you have other copies of the object or don't care if you lose it.
  • If following the above advice does not allow you to find your missing object, you can likely still get a replacement. For older transferable tables, we recommend visiting our store and touching the MIGRATE sign on the wall. This will convert all of your existing transferable game tables over to our new copyable game system, so that you can't lose them again in the future. This should work even if you've lost your game table. When made copyable, they will also show up on our store's redelivery terminal. You can learn more about migration by visiting this page.

Wiki FAQ Q Icon.png I found someone reselling your products, is that allowed?

  • I do not have a reseller program at this time. However, many of my products are transferable and this allows anyone to resell that game to someone else, much as you would at a garage sale or flea market. Unfortunately, often times these tables are counterfeit and I cannot guarantee the same level of support on a used table as I can on a new table. You automatically assume some risk when purchasing used. For example, if there is a failed delivery, it will be up to you to resolve it with the used reseller, I won't be able to help you since it wasn't purchased from me. Likewise, old tables that are purchased used may not be able to be updated to newer versions. There's also the possibility it is a straight up scam, and you will receive nothing for your money. I cannot guarantee the legitimacy of "used" products that are sold by a third party, as I have no affiliation with them. Buyer beware.

Wiki FAQ Q Icon.png My object is missing and I don't know what happened to it. Can I get a replacement?

  • First, you should verify that the item is actually missing! This seems obvious, but sometimes people look in the wrong places. Here are some common mistakes people make when looking for lost items:
    • If you are using the inventory search bar at the top of your inventory window, make sure you are searching by the product name and not the brand name. For example, if you're trying to find your Greedy table, make sure you search for Greedy, do not search for any variation of K.R. Engineering, because the brand name is not in the name. The objects are named "Greedy Greedy Table v2.75" and NOT "K.R. Engineering Greedy Greedy Table v2.75" so they will not show up when searching for brand.
    • Do not rely on the "Recent" tab in your inventory window, as this will often not show items that you expect to be 'recent', such as newly purchased items. To verify your object is actually missing, always go to correct folder in your main "Inventory" tab.
    • Verify that you are not looking in an old folder or box. Each time you update your Greedy game, for example, you will have a new folder with a new game in it, and if you haven't deleted your old folders (from before the update) then you may find yourself having multiple folders all called "K.R. Engineering Greedy Greedy (boxed)."
  • When an object actually goes "missing" in Second Life, the next thing you should do is clear your inventory cache. There are two versions of your inventory; the one that the server knows about and the one that your computer knows about. Sometimes these can be end up being different due to communication errors between the server and your computer, and clearing your inventory cache forces your computer to update what it thinks is in your inventory to be the same as what the server thinks is in your inventory. Very often objects will reappear after doing this, especially objects that were lost due to 'failed to rez' errors.
  • If you still can't find your missing object, there's a good chance that it was returned to you at some point by the owner of the land you last rezzed it on or even by Second Life itself, such as when a parcel goes over prim limits. In this case, your object should be in your Lost and Found folder and just needs to be moved back to its normal folder, BUT it may be hidden! This is a feature of Second Life, and you can read about it in our FAQ on returned objects.
  • If following the above advice does not allow you to find your missing object, you can contact us to ask for a replacement. In most cases we will be able to provide a replacement as long as your table was purchased from us originally. If you bought your object used from a third-party reseller, we may have no record of it.

Wiki FAQ Q Icon.png I bought one of your games on the Second Life Marketplace, and I only received a notecard and a landmark to the store. Where is my purchase?

  • When you buy a game from us off of Marketplace, your delivery is not handled by the SL Marketplace itself. Instead, your puchase will trigger a delivery from K.R. Engineering's own server. This setup allows us to deploy game updates in an efficient manner, as all store and Marketplace purchases are fulfilled by one delivery server. The notecard you received with your MP purchase explains this situation, and also explains that our delivery server can occasionally experience interruptions due to issues with Second Life or our hosting platform.
  • If you do not receive your purchase after a reasonable period of time has passed, use the landmark to travel to our store. On the wall by the door is a button marked Redeliver. If you click this button, you will be directed to a page where you can request a redelivery of your game. Detailed instructions on how to use our in-store terminal to get product redeliveries are also available here.
  • Alternatively, if you have a Gaming.SL Live account, you can request a redelivery online. You can learn more about Gaming.SL Live accounts on this page, and get detailed instructions on how to make an account or change your password here.
  • Also, please be aware that the Marketplace is full of counterfeit tables. Some "second-hand table" listings may be scams intended to steal your Lindens, offering absolutely nothing in return. If it was your intention to purchase a game directly from us, make sure that your Marketplace transaction notes that you paid "Karsten Rutledge." If you paid anyone else, you will have to take the failed delivery issue up with them.

Wiki FAQ Q Icon.png I'm attempting to get a redelivery, and it's not working.

  • By far the most common reason for "redelivery failure" is due to customers trying to get redeliveries of their older, no-copy prim games. The in-store redelivery terminal and Gaming.SL Live's redelivery buttons only work with our mesh game systems and themes. If your games are older prim models, you will need to consult our Migration page, which explains how you can migrate your prim games to our new mesh system and receive updated copies.
  • The second most common reason for "redelivery failure" stems from customers requesting redelivery of their purchases through the Second Life Marketplace. We have turned off the redelivery option, but if for some reason it appears active on a listing due to a bug on Linden Lab's part, you may only receive a notecard and landmark if you try to use it. Please do not use Marketplace's redelivery option, even if it appears to be available. Instead, please request a redelivery by visiting our store or using your Gaming.SL Live account.
  • Finally, if you own one of our mesh game systems and you're having trouble using the in-store or website redelivery options, we will need to figure out which step of the process isn't working for you. This page contains illustrated instructions for both redelivery methods. If the page itself isn't helpful to you, please contact VelvetPurrsons with a description of what you've tried, and what step of the process seems to be failing, and she will assist you.

Wiki FAQ Q Icon.png Can I get a discount if I buy a lot of something?

  • Rather than a bulk discount, our vendors now offer a rewards bonus for each purchase in the form of store credit. This reward bonus can be used towards the purchase of other items in the store. To see how much store credit you currently have just touch the CREDIT sign in the store, or view the "My Credit" page on the Gaming.SL Live website.

Wiki FAQ Q Icon.png I bought something and everything is in the folder except for the actual product!

  • This can actually never happen, but there are many common reasons it might APPEAR to be that way! Here some of the most common reasons:
    1. If this is a newer version of a game you previously owned and updated, you may be looking in an old folder or box from your previous table, make sure that you don't have multiple folders/boxes and verify that you are looking in the most recent one.
    2. If you are using the search bar at the top of your inventory window, you will need to search by the product's name, not our company name. For example if you purchased Greedy Greedy, try searching for Greedy, do not search for K.R. Engineering because the object name is "Greedy Greedy Table vx.xx", there's no "K.R. Engineering" in the name of the game table like there is in the name of other things in the folder.
    3. Do not use the "Recent" tab on your inventory window. The ways of the Recent tab are mysterious and shadowy, it does not always show you everything that's been added to your inventory recently. Look for the folder in your normal Inventory tab.
    4. You may have gotten the item and then subsequently misplaced it unknowingly. This is a "feature" of Second Life. It occurs whenever you attempt to rez a folder full of objects all at once in some Second Life Viewers, by dragging the folder out of your inventory instead of individual items. When this happens, Second Life interprets this as "put this folder of stuff INSIDE whatever I dropped it on." In this case, you have everything except the game/product because it is transfer-only, and everything else in the folder is copyable. Your game/product is inside whatever prim you dropped it on, probably your floor or rug, for example.
      • This can also occur if you press the CTRL button on your keyboard when dragging and dropping just the table by itself.
      • There may be other ways to do this that are not listed here, depending on the viewer you are using, but the end result is the same.
      • Also keep in mind, it is inside the PRIM you dropped it on, not the OBJECT you dropped it on, even if you dropped it on a prim that is in a linked object. You will probably have to enable "Edit Linked Parts" in your build window to look in individual prims, rather than whole objects.
      • It is possible you put the game/product inside an object that you don't own, for example if it is a group owned object or if you have modify rights on someone else's objects (such as your significant other). If this is the case, you don't own it anymore as ownership is transferred to the person who owns the object it is inside of. You may have to ask them to retrieve it for you and return it to you.
      • If you are unable to locate the item, or are unsure how to look for it, please let us know and we will be happy to help you look for it. If we also can't find it then we can usually replace the lost table.


Gambling on Khet is no longer allowed under the new Skill Gaming policy announced by Linden Lab on July 10th, 2014.


  • Version 1.0:
    • Initial release. All game functionality present.
  • Version 1.01:
    • Fixed a memory error during play.
    • Winner's temple can be clicked on to make it go away faster.
    • Fixed a silver pyramid that was rotated wrong on the Dynasty formation.
  • Version 1.02:
    • Added turn indicators.
  • Version 1.1:
    • Added commission sales for board. Players can now buy their own copy of Khet from any other Khet board.
  • Version 1.11:
    • Minor bug fix.
  • Version 1.12 [August 2007]:
    • Added option for board owner to enable/disable reselling. Defaults to off.
  • Version 1.2 [August 2007]:
    • Moves are now made via arrows on the playing board, not drop down dialogs.
  • Version 1.21 [August 2007]:
    • Fixed a bug where a menu timeout was not turning off the timer, so it 'timed out' every minute or so under the right (wrong?) circumstances.
  • Version 1.22 [November 2008]:
    • Fixed a memory error under some circumstances, hopefully. Added some memory optimizations.
    • Added game timeout option, so that the board will reset if games are ignored for over an hour. (optional)
  • Version 1.23 [June 2008]:
    • Changed lasers to use Windlight's new texture glow feature.
  • Version 1.24 [May 2008]:
    • Minor rewrite of board controller script to free up additional memory.
  • Version 1.25 [June 2008]:
    • Fix for board ID conflicts when using multiple games close to each other. Oops. This should prevent further memory errors and other assorted problems.
  • Version 2.0 [August 2009]:
    • Khet Second Life Edition now supports the Eye of Horus Beamsplitter expansion pack! This adds five new layouts to play with.
    • New Sculpted pieces! Each playing piece is now a single sculpted prim, making the game a mere 40/42 prims when playing, instead of 110.
    • Lots of under the hood changes to improve performance, including reduced script counts.
  • Version 2.1 [July 2014]:
    • Added preliminary support for Gaming.SL. Currently only uses G.SL for updating purposes.
    • Removed Resell feature that allowed board owners to sell Khet boards to other people. Literally no-one ever used this.
    • Removed all betting features to comply with the new Skill Gaming Policy announced by Linden Lab on July 10th, 2014.
  • Version 3.0 [February 2016]:
    • Complete rebuild and rewrite of all code. Khet is now 100% mesh.
    • Khet no longer uses temp rezzing for any game elements, including pieces, laser beams or control pads.
    • Khet now supports "Khet 2.0" style gameplay with Anubis and Sphinx pieces.
    • Khet can now be resized from 1m to 30m in size.
    • Khet now supports multiple color schemes for game pieces.
    • Scripts reduced from 48 to 3. Yep.
  • Version 3.01 [February 2016]:
    • Fixed a bug in the Gaming.SL API script.
  • Version 3.02 [February 2016]:
    • Fixed the Anubis pieces missing their specular map (gloss).
  • Version 3.03 [February 2016]:
    • Altered laser matrix mesh to be more accommodating to size changes. Laser matrix was being rescaled <0.01 (min prim size) in some cases.
    • Changed resize code over to using the newly added LSL function LLScaleByFactor() rather than using my own function that manually resized each prim.
  • Version 3.04 [March 2016]:
    • Fixed and links not loading correctly on some viewers when clicked from the Khet menu.
  • Version 3.05 [March 2017]:
    • Fixed a bug with the resizer function sometimes making things weird.

External Links