We shipped a one-mechanic puzzle app — here's what we built and where it falls short
niixolabs
The premise Most mobile games compete on stimulation: timers, streaks, daily missions, push notifications. We wanted to go the opposite direction. Off By One has exactly one mechanic: a grid of near-identical geometric shapes, one slightly wrong. Find it. No countdown. No lives. No nudge to come back tomorrow. How it works technically Drawing is handled by SwiftUI Canvas. Shapes and decorations are procedurally generated — around 133,200 combinations — so the same stage looks different on each a