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Mono Stack Blocks is a monochrome line-clear stack game in the browser: stack tetrominoes on a 10x20 grid, clear rows, use hold and ghost preview, and chase level-ups with local high scores. About ~58 KB after Play, no install, no account.

Prefer a hex rotation puzzle from another genre? Try Hex Puzzle Blocks.

MONO STACK BLOCKS

Line-clear stack from the open-source Cursor Arcade blocks module (MIT). About ~58 KB downloads once from this site when you press Play. High scores stay in your browser.

Arrows or WASD move and rotate. Space hard drop. C or Shift hold. P pause. R restart. Keyboard required - no touch HUD.

Press Play to load the game.
Scores use ftol:monostackblocks:storage.

Welcome - press Play to load Mono Stack Blocks. High scores stay under ftol:monostackblocks:storage.

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Frequently Asked Questions

What does Mono Stack Blocks do?

It is a line-clear stack game on a 10x20 grid. Stack tetrominoes, clear full rows for score, level up gravity every 10 lines, and use hold plus ghost preview. SRS wall kicks and 7-bag randomizer are built in.

Does it work on a phone?

The page loads on phones, but the engine has no on-screen controls. Use a keyboard on desktop or laptop for move, rotate, hard drop, and hold.

Is anything saved in my browser?

Yes. High scores and theme settings use localStorage key ftol:monostackblocks:storage via the settings stub. Reset all high scores clears bests from Settings. Nothing is uploaded.

How big is the download?

About ~58 KB of HTML, CSS, and JS after you press Play. The browser caches it for later visits on the same device.

How do I play?

Left and right arrows move. Down soft drops. Up, W, or X rotates clockwise; Z or Q rotates counter-clockwise. Space hard drops. C or Shift swaps hold once per piece. P pauses. R restarts.

Is this open source?

Yes. It is adapted from the blocks module in Cursor Arcade by flancast90 (flancast90/cursor-arcade-games) under the MIT license. This site build stubs the VS Code webview API and ships LICENSE and CREDITS.