Block Stack is the classic falling-block puzzle: rotate and place pieces to build complete lines and clear them before the stack reaches the top.
Use the arrow keys (or the on-screen buttons) to move and rotate each falling piece, press Space to drop it instantly, and fill whole rows to clear them. The game speeds up as you level up.
Look at where each piece will land (the faint ghost outline shows it) before dropping, avoid creating holes under overhangs, and keep the middle of the board low.
Falling-block puzzles were born in 1984 and went on to become one of the best-selling game genres of all time.
Yes. Block Stack is completely free and runs directly in your browser. There is nothing to download or install and no account is required.
Yes. Pixel Arcade is built to work on desktop, tablet and mobile browsers, and the controls adapt to touch screens as well as keyboards.
Yes. After your first visit, Pixel Arcade caches its single-player games so they keep working without a connection.
Your best scores, coins and achievements are stored on your device, and you can optionally back them up by signing in from the main arcade page.