Block Stack
Stack and clear blocks in this classic puzzle!
Move and rotate falling blocks to create complete rows. Complete rows are cleared!
What Is This Tool?
Play this classic block-stacking puzzle game free in your browser — no download, no account, and no ads interrupting the game. Move and rotate falling blocks to complete horizontal Lines, clear them for points, and keep the stack from reaching the top. The game tracks your Score, Level, and Lines cleared in real time, and your Best score is saved so you can chase a new record.
How to Use
- Press Enter to start the game.
- Use Move to shift the falling block left or right, and Rotate to turn it into a new orientation.
- Use Soft Drop to speed up the block's fall a little, or Hard Drop to send it straight to the bottom.
- Complete a full horizontal row to clear that Line and score points.
- Watch the Next block preview to plan your placement in advance.
- The game speeds up as your Level rises — keep clearing Lines to avoid the stack reaching the top.
Common Use Cases
- Practising quick spatial planning and decision-making under time pressure
- Taking a short, focused break between work or study sessions
- Playing a familiar block-stacking game without installing anything
- Challenging yourself to beat your own Best score
- Passing time on a phone or desktop without downloading a game app
Tips & Tricks
- Check the Next block before you commit to a placement so you can plan one move ahead.
- Keep the stack as flat and even as possible — tall, uneven columns make it harder to complete Lines later.
- Use Hard Drop once you're confident about a placement to score faster and keep the pace under control.
- Leave a clear column near an edge when possible, so a well-timed piece can clear multiple Lines at once.
- Slow down and use Soft Drop when the board gets crowded near the top — a rushed placement can end the game early.
Frequently Asked Questions
Is this game free to play?
Yes — completely free, with no account, no download, and no installation required.
How do I control the blocks?
Move the falling block left or right, Rotate it to change orientation, and use Soft Drop or Hard Drop to control how fast it falls.
How do I clear a line?
Fill an entire horizontal row with blocks and no gaps — the completed row clears and adds to your Score and Lines count.
Is my best score saved?
Yes. Your Best score is stored locally in your own browser, so it's still there when you return later. It is never uploaded to a server, and clearing your browser data will reset it.
What happens when I set a new record?
The game shows New Record when your current Score passes your previous Best.
Does the game get harder over time?
Yes, the Level increases as you clear more Lines, which speeds up how fast blocks fall.
Can I play on a phone?
The game runs in any modern browser; try it on your device to see how the on-screen controls suit your screen size.
Do I need an internet connection while playing?
Once the page has loaded, the game runs entirely in your browser, so gameplay doesn't depend on a live connection.
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