Drop Puzzle is a finished, reskinnable drop-and-merge physics puzzle game. You aim and drop circles into a container; two circles of the same size merge into the next bigger one across 11 tiers, quick merges build a combo multiplier, a top-tier bonus rewards the biggest ball, and an overflow timer with a warning ends the game when the pile stays above the dashed line. Two boosters help: Hammer smashes one ball and Shake frees stuck balls, and a rewarded second chance can clear the top of the pile.

Every game earns coins for a shop with four ball skins (Cute Faces, Fruit Basket, Solar System, Jelly Numbers), six backdrops, five containers, boosters and a remove-interstitials item. Lifetime score unlocks nine ranks with medals, and a leaderboard shows your best runs next to offline rivals. A game in progress is saved and can be resumed with CONTINUE; saves are atomic with a backup file.

Ads go through one service with a built-in test provider (clearly labelled TEST AD) and an AdMob skeleton, haptics scale with merge size, and settings cover music and sound volume, vibration, screen shake, reduce flashing, aim guide, fullscreen, auto-pause and player name. The UI adapts to portrait phones, tall phones, tablets, square and landscape windows with safe-area insets, and works with touch, mouse, keyboard and gamepad. Eleven achievements, a leaderboard upload, rich presence and Steam Deck support are wired to optional GodotSteam and are silent no-ops without it.

Every rule and price lives in config/game_config.tres. Includes a balance bot, a 245-check smoke test, 20 real screenshots, marketing slides and a 53 second autoplay preview video. All third-party art and audio is CC0 (Kenney, Ninja Adventure) with every file's source documented; the ball skins, backgrounds, logo and icons are original generated art.