Ability Roulette is a turn-based strategy card game for one or two players set aboard the Last Round Express, a night train crossing a stylized late-1920s Britain. Players see the counts of live rounds and blanks in a shared revolver while the order remains hidden, use 15 combinable ability cards, and choose whether to aim at themselves or their opponent. It includes offline single-player play, private online matches with friends, public matchmaking, and cross-platform multiplayer.