☯Reversi Lab
Reversi Lab takes the classic disc-flipping board game and asks a simple question: what happens if you change one rule?
Every variant starts from the same familiar move — place a disc, bracket your opponent’s line, flip everything in between. From there, one rule shifts. Win by connecting five instead of counting discs. Keep fewer discs than your opponent. Anchor a single disc that will never turn. Put a knight on the board that forbids the squares it attacks. Seal the four corners, shrink the board to 6×6, or race to claim three corners before your opponent does.
Fifteen experiments are sorted into four benches — Goals, Pieces, Boards and Conditions — so you can see exactly which rule is being tested. Play against the computer on two difficulty levels, or hand the device to a friend for local two-player. Wins are tracked per variant, with global leaderboards for total wins and for how many variants you have conquered, plus nine achievements for the completionists.
No timers, no energy, no accounts. Just a board, a rule, and a decision every turn.