Double Domino Havoc - A 3D printed Game of Skill and Chance

thingiverse

A few years ago, I designed a game called “Board Dominoes” which was sold online at TheGameCrafters.com website and thru my own website. I still play the game often with friends and family and everyone loves it. Someone recently asked me if I was still selling the game and it dawned on me that now that I had a 3D printer, I could actually make a newer version of it in plastic and share it with those who have access to a 3D printer. Since the 3D version would not be played on a game board any longer, I have renamed the game “Double Domino Havoc” in honor of how I have come to learn the game is actually played. You will learn this too should you decide to print it. The game comes in two sizes, but I am only sharing the travel size version here since it can be printed in one print operation. Each rack takes approximately 7 hours to print and the number of racks you print depends on how many players are going to play the game (up to 8). I prefer the numbered dominoes versus the ones with dots. The dominoes are not included in the 3D print. You can purchase a Mexican Train Fun Size Numbered Dominoes double 12 set for use with up to 8 players or a double nine set for playing with four to six players. The 3D print creates a single rack which contains sections for holding dominoes. You will need one rack for each person who wishes to play. The object of the game is simple, be the first person to move 6 dominoes from the tray area of the rack to play zone. But winning the game is not as easy as it sounds. Read the rules of doubles to learn why. Instructions Printed at .25mm with infill of 25% and no supports required. The rack comes in 3 pieces, so you will have to glue them together. I use ABS plastic filament, so I glue it with PVC pipe cement. The center direction arrows can also be glued together to form a single element. The direction arrows come in handy for remembering the player rotation order which changes frequently throughout the game. The game rules follow: Rules for Double Domino Havoc (Previously known as Board Dominoes) Double Domino Havoc is an addicting game of skill and cshance that is simple to play, but difficult to win. The objective is quite simple. Move 6 dominoes from your tray area to the 6 spaces above it as you draw tiles from the boneyard or optionally from the face up tiles at the top of each players domino rack, all the time while discarding a tile to keep a fixed number of dominoes in play. The first person to move their six dominoes from the tray area to the center section of their rack is the winner of the round. The number of rounds can be any agreed upon number to make up a single game. A full size (2”x 1”) set of Double 12 Dominoes (Not Included!) is required for play with 8 players although a Double 9 set is suitable for 6 or less players. Each domino holder (called the rack) is divided into three sections. The bottom section contains slots for holding up to seven dominoes. The center section holds six dominoes and the top section holds one domino which is for the discarded dominoes. To begin play, place the entire set of dominoes face down on the table and mix up the tiles. This will become the boneyard from which players will have a choice from which to draw. Note: Players may also draw from face up dominoes located on each players discard section of their player rack. Place the direction token in the center of the table with the Clockwise direction arrow facing up. Determine who will start first using any number of methods such as draw for high point, etc. Any number of players from 2 to 8 may play but at least 3 are needed to make use of the clockwise and counterclockwise rules described in the RULES OF DOUBLES section below. The game starts by having each player take 6 dominoes from the boneyard and placing them in the tray area of their rack. The first player starts by taking one additional domino from the boneyard and adding it to their tray. The player then arranges these 7 dominoes to obtain the best sequential train they can form. This is the only time you will have more than 6 dominoes in your tray! At the completion of your play, you will be discarding one of the 7 dominoes. The domino at the head of this train is then placed in the center section of their rack in the first empty space nearest the top of the rack. The player must then discard one domino from their tray face up to the space in the top of the rack. You want to try to play your highest numbers as soon as possible because whatever is left in your tray is counted against you at the end of the round. At the completion of each play there should always be a total of six dominoes between a player's tray and the six playing spaces on the rack. (This does not include the space for one domino at the top of the rack used for discards). After each of the players has completed their first round of play, there should now be one domino from each player in the top section of their rack facing up. These dominos are now available to be taken in lieu of drawing from the boneyard. Each round of play consists of drawing one domino, playing a domino if possible (to the center of their rack), and then removing and discarding one domino face up to the top of their rack in the discard section so that you are always left with six dominos in play between your tray and that of your train. The center section of each rack contains six vertical recessed areas in which your sequential train is played. The horizontal recessed area nearest the top of the rack is for discards. You may start your train with any domino you like. It will be placed in the center section at the topmost position and each successive domino will be placed next to the previous one so that the matching numbers on the dominoes are side to side of each other. Before placing a domino into the discard zone, the tile currently resting there, must be removed and placed face up on the table. That domino is now out of play for the rest of the game. If a player chooses to take a face up discard from another players rack for his draw, instead of taking one from the boneyard, then their discard must be to the same space from which they took the face up domino. Depending on one’s strategy, the choice of whether to draw from the boneyard or to take one of the face up dominos in the top section of any other players rack is strictly up to each player. As each round of play ensues, the face up discards will typically be swapped out, but in some situations, the discards may disappear or even be left for the next round of play. You must take this into account when devising your stategy for game play. For instance, if you take another players discard, that leaves your discard available to your opponents for another round of play. The Rule of Doubles: Here is where the fun begins, but when first learning to play the game, you may wish to skip this section until you get familiar with the Draw, Play, and Replace/Discard routine. It is very important that you learn to Draw first, then Play, then Discard because if you draw a double domino, the rules of doubles comes into play. Should a player draw a double domino from the boneyard after the initial 6 dominoes have been drawn, it must immediately be played face up to the discard section of the players rack/rack. This is why it is extremely important that each player draw first before playing their domino to the center section of their rack, which is a common mistake most people make when they first start learning the game. Get into the habit of always drawing first! Any time a double is placed in a players discard section, the rule of doubles comes into play. This is regardless of whether or not you just drew a double or whether you played a double from your tray. If you happen to draw a double during your initial six dominoes drawn at the start of the game, you may play it in your train or use it as a discard at any time during the game. Drawing a double effectively causes the player who drew it to lose a turn, but it could force one or more of that player's opponents to also lose a turn, or more importantly, to break up their train. In some cases, such as when no other player can match the double, it effectively gives the player playing the double and extra turn, so it can be a good thing or a bad thing depending on the play. Playing an odd numbered double forces the order of play counter clockwise, therefore, if the play order were in a clockwise direction at the time of play, the next player will become the person to your right or in a counter clockwise direction. Odd numbered dominos are the double 1, 3, 5, 7, 9, and 11. A direction arrow in the very center of the table should be flipped over to remind players which direction they are currently playing as player direction will get confusing over time. Note: All games initially start out in a clockwise player rotation. Playing an even numbered double forces the order of play clockwise, therefore, if the play order were in a counter clockwise direction at the time of play, the next player will become the person to your left or in a clockwise direction. Even numbered dominos are the double blank, 2, 4, 6, 8, 10, and 12. The direction arrow in the very center of the table should be flipped over to remind players which direction they are currently playing. When play passes to the next player after a double has been placed in any players discard area, the following rules apply to that person. Players next in rotation of play have three choices. The player may take the double and play it only if the last tile in his train matches the double. If the double cannot be played, the player must try to match it with any single tile in their tray if one exists. The matched domino then replaces the double and the double is discarded face up on the table. The player must then take a replacement domino from the boneyard. It is a common mistake that players may forget to do this and then their tray domino count will be off. If that occurs, simply draw another domino from the face down boneyard when it is discovered and continue playing. Play then passes to the next player in rotation and the rule of doubles ends. If none of the above 2 choices occur, the player must pass and lose a turn. Play passes to the next player in rotation who then has the same 3 choices. If play comes back around to the original person who played the double, the double may not be picked up by the originator and it is deemed dead. This, in effect, gives the player back his lost turn. Doubles drawn during the initial six domino draw at the beginning of the game however, may be used in their train or used as discards later. The rules of doubles does not apply at the time of drawing the initial six tiles. Winning And Losing the Game The first person to move their 6 dominoes from their tray to the rack wins the round and everyone tallies the points left in their trays. A time limit or a fixed number of rounds to be played can be established prior to the start of the game. The counts from all rounds at the end of the game are used to score the game winner or optionally, a time limit if so established. There is no set number of rounds required to end the game. Play as many or as few rounds as you like. Good Luck! And have FUN! If you have any questions about the rules of play, please email me at larryfortna@gmail.com. This game is also available for sale online as a board game known as Board Dominoes.https://www.thegamecrafter.com/games/board-dominoes A FREE online version of this same game is available for use with the Vassal Game Engine.http://www.vassalengine.org/wiki/Module:Board_Dominoes