Free Block Stacker Online
Rotate falling blocks to fill complete lines and keep the stack low.
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Block Stacker
Arrow keys to move. Up or Z to rotate. Space to hard drop. Mobile: tap buttons below canvas.
0
points
Level1
Lines cleared0
Best score0
How to Play Block Stacker
Seven different block shapes fall from the top of the board. Use the arrow keys (or the on-screen buttons on mobile) to move each block left and right. Press Up or Z to rotate the block clockwise. Press Down to drop it one row at a time. Press Space to hard-drop it instantly to the lowest valid position. When a horizontal row is completely filled, it is cleared and you score points. The game ends when the blocks stack up to the top of the board.
Controls
- Left / Right arrows: Move the block horizontally
- Up arrow or Z: Rotate clockwise
- Down arrow: Soft drop (one row faster)
- Space: Hard drop (falls instantly)
- P: Pause / unpause
- Mobile: Tap the on-screen arrow buttons
Scoring
- 1 line: 100 points x level
- 2 lines: 300 points x level
- 3 lines: 500 points x level
- 4 lines at once: 800 points x level
- Every 10 lines cleared: level increases and blocks fall faster
Tips
- Keep the board as flat and low as possible. Avoid creating overhangs that trap empty space underneath.
- The ghost piece (faint outline below your block) shows exactly where it will land. Use it to judge drops precisely.
- The long bar is the most valuable piece - use it to clear four lines at once for maximum points. Save a gap on one side to slot it in.
- Hard-dropping early gives you more time to see the next piece and plan ahead.
FAQ
Is my best score saved?
Yes. Your highest score is stored in your browser locally and shown each time you play. It persists between visits on the same device.
How fast does the game get?
Speed increases every 10 lines cleared. At level 1 blocks fall slowly. By level 10 the speed is very fast. There is no upper limit on the level.