ALT Overview of Bacttle. (A) Set up of the game. (1) A card deck with the challenges to be unraveled and a card deck with the traits. (2) Board support for the tokens, representing the habitat where the player’s microbes are living. (3) Tokens representing the different bacterial species for each of the players. (4) Every player starts with three tokens (cells) on the board, which can increase or decrease during the game’s rounds. (5) Players always have four trait cards in their hands. (6) Players can play three trait cards in front of them. (B) Example of environmental challenges (top) and trait cards (bottom). Green environmental challenges represent benign situations that can be beneficial with the appropriate trait card (multiplying tokens), while red represents harmful situations that require a trait to preserve the tokens in play. Arrows relate to the trait cards that are useful for every environmental challenge.