Vault Breaker

Each safe begins with a code of symbols (coins, clovers, hearts, diamonds, keys and crowns) flashed one at a time on the door’s glass. When it finishes, tap the same symbols on the ring-shaped keypad in the same order before the timer around the door runs out.

The difficulty climbs safe by safe: codes get longer and flash faster, the keypad starts to spin, some codes must be entered backwards and later the buttons shuffle places. A wrong tap or a timeout trips one of three alarms, and the third ends the run. Each cracked safe scores 100 times its number plus a bonus for time left.