BLOCK STACK

How to play

Rotate and stack the falling tetromino pieces to complete horizontal lines before the stack reaches the top. Use the arrow keys or WASD to move pieces left and right, rotate them clockwise, and soft-drop them faster — or hit space for an instant hard drop. Clearing several lines at once scores more, and every ten lines cleared raises the level and speeds up the fall. On mobile, use the on-screen buttons or swipe left/right/down and tap to rotate. Your best score is saved automatically in this browser.