Initializing, please wait a moment

When to Play Black Hole Square

Black Hole Square fits short logic breaks where you want a tap-to-clear space puzzle without timers - about ~40 KB after Play.

Move-budget puzzles

Each board is a self-contained clear-the-grid challenge. Skip ahead or reset with swipes and resume from ftol:blackholesquare:storage later.

Touch-first sessions

Tap and swipe on a phone during a commute. Canvas scaling keeps the 320x416 playfield readable.

When to pick another game

Want pipe rotation? Use Pipe Rotate Puzzle. Want sliding tiles? Use Cyber Slide Puzzle.

See how to play and comparisons.

← Back to games

Why trust these tools

  • Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
  • No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
  • Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
  • Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
  • Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.

Related tools:

  • Black Hole 3D Visualizer - Black Hole 3D Visualizer - Tens of thousands of glowing particles orbit the black event-horizon
  • Black Hole Square - Black Hole Square - free browser tap puzzle: clear every square into the black hole with limited

Related guides:

Loading reviews...