Veinticinco Marble Game

thingiverse

Twenty-Five is a straightforward, effortless-to-understand, fast-paced strategy game for 2 to 4 players. Each match begins with marbles arranged in a 5x5 grid. Each player, on their turn, may take as many marbles as they choose (but always at least one) in a contiguous row, column, or diagonal. In other words, if a previous player has taken a marble in the middle of a row, column, or diagonal, following players may no longer take that entire row, column, or diagonal. Players continue to remove marbles until only one remains. The person forced to take the last marble loses. When playing with 2 players, each game the players will alternate making the first move. Each match consists of an odd number of games. In 3- and 4-player matches, the first player rotates clockwise. When playing with 3 or 4 players, matches can be double-elimination, in which players with two losses are eliminated until one player remains; alternatively, matches can be a set number of games, with the player(s) having the fewest losses winning the match. This game requires 25 marbles. I designed this model around these marbles but any 14mm size (Chinese checker size) marbles will work. However, I've included the STL file with the correct marble size in this project in case you prefer to print your own marbles. If anyone has ideas or feedback for how to improve the rules of this game or the 3D model, please send a message or leave a comment. If I like your idea, I'll include it here in the description with attribution to you.