Initializing, please wait a moment

Como jugar Black Hole Square

Black Hole Square loads a ~40 KB tap puzzle in an iframe. Tap marked squares. Swipe left to skip, swipe right to reset. Saves: ftol:blackholesquare:storage. Engine MIT (Quinten/black-hole-square).

Last reviewed: 2026-07-18

Tap marked squares. Swipe left to skip, swipe right to reset. Saves: ftol:blackholesquare:storage. Engine MIT (Quinten/black-hole-square).

This locale guide · EN · Games

Share Tweet Share Post

Last updated: Jul 17, 2026

Reviewed by the Free Tool Online editorial team · Tested in the current versions of Chrome, Firefox, Safari, and Edge before publishing. No account is needed to use any tool. Report a bug - we triage within 72 hours. · Last refreshed April 2026.

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:

How to Convert 100 HEIC Photos to JPG - How to convert 100+ HEIC photos to JPG in-browser without upload.
How to Test for Dead Pixels Before Returning a Monitor - How to test for dead pixels before returning a monitor - full-screen color check, stuck vs dead
How to Sign a PDF After Removing a Password - How to sign a PDF after removing its owner password - legit workflow for contracts and forms, with
How to Extract Frames from a GIF for a Social Post - How to extract frames from a GIF for a social post - pick a hero still, preserve transparency, and
How to Check Webcam and Microphone Before an Interview - Check webcam and microphone before an interview - 5-minute browser test for camera, mic levels,
How to Minify CSS and JS for Cloud Run Cold Start - Minify CSS and JS to cut Cloud Run cold-start and Cloudflare Workers bundle size.
How to Compress a Folder for Email - Compress a folder for email in under a minute.
How to Compress a File Online (Step by Step) - Compress a single file online without uploading.
Folder To Zip: When and How to Archive a Folder Online - Folder to zip guide: when archiving a folder into a single .zip actually saves space, how to pick
Online Zip File: How to Build a ZIP Archive Online - Build a ZIP archive online - paste files or a folder into the browser creator, get a downloadable
How to Reduce Zip File Size Online (Free) - Reduce zip file size online and free.
How to Convert HEIC to JPG Step by Step - Convert HEIC to JPG step by step.

Loading reviews...