Screw Sort Lab

Screw Sort Lab is a colour-sort puzzle set on a pastel hardware bench. Tap a tube to pick it up, tap another to pour — matching tops pour as a run, and a full mono tube caps itself. Sixty hand-tuned levels across six chapters feed into an endless generated Free Bench once the campaign is done.

Key Features

Sixty hand-tuned levels, then endless. Six chapters where the rule set grows under you — from two-colour basics to bigger palettes, hidden screws, and capped tubes. Past the campaign, the Free Bench hands you generated trays that are solvable by construction and never repeat.

A daily layer over all of it. One shared tray per UTC day, a return streak that lifts hints, and a Daily Challenge that fits wherever the game fits without crowding it.

Deliberately calm, and that is a design rule. Undo is free and unlimited. Pour arrows light up when you are new; the game withdraws them later. Refused moves cost nothing but a moment, and the tray does not remember them.

Same game on the web and on Android. One codebase, three payloads. The Android build is the same engine wrapped in Capacitor and published as Screw Sort on Google Play.

Offline-only, by choice. The Android manifest declares VIBRATE and nothing else. No INTERNET, no analytics, no crash reporting, no ads, no account. Progress and stars stay on the device; uninstall clears them.