Flag Trap is a freeze-frame offside puzzle built for quick, decisive calls. Each round locks the pitch at the exact moment a pass is played, highlights the receiver, and asks you to judge GOAL or OFFSIDE before the play moves on. Correct verdicts build score, coins, and streak bonuses across a handcrafted ladder of twelve ties that grow in difficulty and reward. Spend coins in the Replay Shop to reveal the offside line on tight frames, then push your accuracy through a full run from opening whistle to full-time recap. Flag Trap trains line-reading instinct with stadium visuals, crisp English UI, and session-based progress you can reset anytime for a fresh run.