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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.

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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

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

StepAction
LaunchPlay on this page to inject the iframe
TapClick or tap a square to interact with that cell
SkipSwipe left to skip the current puzzle
ResetSwipe right to reset or return to earlier levels
SavesProgress persists in namespaced localStorage on this device
Compare four Space Grid figures: Play on this page, Tap a square, Swipe left to skip, and Swipe right reset.
Space Grid: Play on this page, Tap a square, Swipe left to skip, Swipe right reset.

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

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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.