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.
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.
Welcome - press Play to load Mono Stack Blocks. High scores stay under ftol:monostackblocks:storage.
Mono Stack Blocks rewards planning ahead: line clears, drop bonuses, and rising speed all feed one score you can beat across sessions.
Scoring and levels
- Line clears score 100, 300, 500, or 800 points for one, two, three, or four rows at once, multiplied by your current level.
- A soft drop adds 1 point per cell and a hard drop adds 2 points per cell, so committing early pays off.
- The top bar tracks score, lines, and level; the level rises every 10 lines cleared and gravity speeds up with it.
Pieces and assists
- Tetrominoes are dealt from a 7-bag randomizer on a 10 by 20 grid, so each of the seven shapes appears once per bag.
- SRS wall kicks let a rotating piece shift out of a wall or the floor, and a ghost outline previews where the piece will land.
- Hold sets one piece aside per turn; the settings menu switches to a dark theme or resets your saved high scores.
About this build
The game is adapted from the open-source Cursor Arcade blocks module by flancast90 under the MIT license. This build stubs the editor APIs the original was written against and ships its LICENSE and CREDITS alongside the page.
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.