DailyPrompt — daily AI model comparisons

Stamp Restorer is a sliding tile puzzle where you rebuild a torn postage stamp picture (a hot-air balloon) before the mail truck leaves. The screen shows a 4x4 grid of colorful numbered stamp fragments with one tile missing, forming an empty slot, plus a small preview of the finished stamp in the corner and a countdown clock ticking down from 90 seconds. Swipe any row left or right, or any column up or down, to shift that whole line of tiles into the empty slot, or drag a tile that sits directly next to the empty slot straight into it; the hint line reads 'Swipe a row or column, or drag a tile into the gap' — on desktop, arrow keys shift the row or column nearest the empty slot. Your move counter and the countdown clock are both shown large at the top; you win when every fragment matches the preview image and the truck honks off with a 'Delivered!' banner showing your move count, but if the clock hits zero the screen shows 'Too Slow — Truck Left Without It' next to your move count and a large Play Again button restarts you at the splash screen. Before anything moves or the clock starts, a splash screen shows the game name, the swipe/drag hint, and a big Start button.