OBRUM is a strategic puzzle roguelite where you battle corruption, one bit at a time.

Every tile on the board (called a Core) carries active bits. Only the leftmost active bit matters: it determines which rule will fire, unleashing chain reactions of growth, decay, and chaos.

Draft your rules carefully from three schools:

• Additive: Grow and amplify cores.

• Subtractive: Erase and contain corruption.

• Chaos: Unpredictable effects with risky rewards.

Call upon Subroutines (digital allies) when stuck. Survive sequences, face bosses, and confront OBRUM himself: the corrupted overseer of the grid.

When you clear him, the final challenge awaits: the global leaderboard, where other players are your true opponent.