4M4MSentinel scatters timed colorful items randomly across the screen. Tap each item before it disappears to pick it up and score. Spawn speed rises as your score grows, tightening reaction windows on longer runs. Missing four items ends the run, so you must prioritize targets nearing timeout. Up to several items can appear at once in varied positions, rewarding fast scanning and efficient tap routes. Empty taps do nothing—only expired items drain your miss budget. Simple one-touch pickup rules create quiet urgency through short visibility windows. Track your high score as you improve coverage under rising spawn rates. Ideal for collect-before-expire reflex games with a four-miss budget.