AIEK Stacks is a free falling-block line-clearing puzzle with ghost landing guides and climbing levels, playable instantly in any browser. Last updated: July 2026.
Play a Free Block Puzzle Game Online – AIEK Stacks
AIEK Stacks is a free falling-block puzzle game: rotate and place the seven classic pieces, clear full lines, and survive as the drop speed climbs every ten lines. A ghost outline shows exactly where your piece will land, and the hard-drop slams it home for bonus points. Play free in your browser — desktop keyboard or on-screen touch controls.
How to play
Arrow keys move and rotate, down soft-drops, space hard-drops, P pauses. Clearing multiple lines at once scores far more: a single line is 100, but four together pay 800, multiplied by your level. Keep the stack flat, reserve a slot for the long piece, and never build higher than you can clear.
FAQ
Is AIEK Stacks free? Yes — free in your browser, no download or account.
How does the leaderboard work? When your game ends, save your score with three initials and your email to join the site-wide top 10.
More free games: try AIEK Snake, AIEK Solitaire or see all eight at the AIEK Arcade.