Void Formula is a math game where player is gonna do + / - or exchange the formula number with other player to prove the existence of 0 [Void]. If at the start of the game there is no player that can prove the existence of 0 by combining 4 number formula, the game will run up to 3 round. on each round player can : draw 1 formula card from deck [optional] exchange 1 formula card with other player, the player can only ask for higher or lowest, without asking the number. discard 1 card from hand to end your turn. If the card you discard have effect, activate the effect before ending your turn. Each round end when all player have discard 1 card. if on this phase player can prove the existence of 0 he/she must open their hand and win the game. If until round 3 no player can prove the existence of 0, the player that have the closest number to 0 win the game. —description from the designer

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