Black Hole Square is a js13k tap puzzle in the browser: clear every square into the black hole before you run out of moves. Swipe left to skip, swipe right to reset or go back. About ~40 KB after Play, no install, no account.
Prefer a rotate-to-connect grid? Try Pipe Rotate Puzzle.
Tap squares to absorb them into the black hole. From Quinten Clause (MIT, js13k 2021). About ~40 KB downloads once when you press Play. Level progress stays in your browser.
Tap or click a marked square. Swipe left to skip a puzzle, swipe right to reset or go back. Works on touch screens. All puzzle levels are unlocked in this build.
Black Hole Square
Black Hole Square is a free browser tap puzzle you can play without an account or install. Press Play to load the roughly 40 KB canvas engine in a same-origin iframe, then swipe left on the title to begin.
Key features
- Tap marked squares so every piece absorbs into the black hole.
- Each puzzle has a move budget shown in the HUD; clear the board to advance.
- Swipe left to skip a board; swipe right to reset or go back.
- Progress dots under the board reopen solved puzzles.
- Loads in about 40 KB after Play, with touch-friendly canvas scaling.
Privacy and saved progress
Progress stays in your browser under ftol:blackholesquare:storage - your current level, solved list, and recorded solutions - and is never uploaded. Nothing leaves this device except the initial page and the game files from this site.
How it is built
Black Hole Square is adapted from Quinten Clause (MIT, js13k 2021). This build namespaces localStorage and ships the LICENSE next to the engine.
For more free browser games, open the games hub. Prefer pipe rotation instead? Try Pipe Rotate Puzzle.
Frequently Asked Questions
What does Black Hole Square do?
You tap special squares on a 6x6 board so they absorb into the black hole. Clear every non-hole square before you run out of moves. Completing a board advances the level sequence.
Does it work on a phone?
Yes. Tap squares and swipe left or right between puzzles. The canvas scales to the screen.
Is anything saved in my browser?
Yes. Progress uses ftol:blackholesquare:storage for current level, solved list, and recorded solutions. Nothing is uploaded.
How big is the download?
About ~40 KB of HTML and JS after you press Play. The browser caches it for later visits on the same device.
How do I play?
Swipe left on the title to start. Tap marked squares (X, arrows, neutron stars) to move or absorb pieces. Swipe left to skip, swipe right to reset or go back. Progress dots under the board jump to solved puzzles.
Is this open source?
Yes. Adapted from Black Hole Square by Quinten Clause (Quinten/black-hole-square) under the MIT license. This site build namespaces localStorage, strips the service worker, and ships LICENSE next to the engine.