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A space-themed grid puzzle in the browser tab: tap squares to interact, swipe left to skip a level, swipe right to reset or revisit earlier puzzles.

SPACE GRID PUZZLE

Canvas grid puzzle with black holes and neutron stars. Press Play to load about ~39 KB.

Press Play to start.

Tap squares inside the frame; swipe left to skip, swipe right to reset.

Space Grid Puzzle

Last reviewed: 2026-07-12

Press Play and a space grid puzzle loads in the tab. Tap squares to clear the board, then swipe to move between levels.

Step	Action
Launch	Play on this page to inject the iframe
Tap	Click or tap a square to interact with that cell
Skip	Swipe left to skip the current puzzle
Reset	Swipe right to reset or return to earlier levels
Saves	Progress persists in namespaced localStorage on this device

Adapted from Quinten/black-hole-square (MIT, js13k 2021). Single-file canvas bundle, zero CDN after load.

Last updated: Jul 12, 2026

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Frequently Asked Questions

Does Space Grid Puzzle save progress?

Yes. Saves use namespaced localStorage ftol:spacegridpuzzle keys on this device.

How large is the download?

About ~39 KB in a single inlined index.html canvas bundle.

How do I control the game?

Tap squares to interact. Swipe left to skip a puzzle; swipe right to reset or revisit earlier levels.