Game CMB
How high can you stack?
🏆 BEST: 0Tap, click, or press Space to drop the moving block onto the tower.
The higher you climb, the faster and narrower the blocks get. Chain Perfects for combo multipliers, hit height milestones for bonus celebrations, and beat your personal best!
This is the name shown on the leaderboard when you submit a score.
Stack It! is a free online block-stacking arcade game built for quick, one-more-try sessions. Drop each moving block onto the tower with precise timing — perfectly aligned drops keep your tower at full width and trigger a scoring combo, while off-center drops slice the block down to the overlapping section. The tower gets taller, the blocks move faster, and the margin for error shrinks with every level, so staying sharp is the only way to keep climbing.
Every run takes just seconds to start and ends in well under a minute, making it the perfect game to fit into a short break — and even shorter to jump straight back into. Chase your personal best, chain Perfect placements into a growing combo multiplier, unlock height milestones like "Stack Master" and "Legendary," and see how you rank on the global leaderboard. No download, no account required — just open the page and play.
Yes. Stack It! runs entirely in your browser on Game CMB, completely free, with no download or installation required.
Yes. Stack It! is built mobile-first — just tap anywhere on the game area to drop a block. It also works with mouse clicks or the spacebar on desktop.
Perfectly aligned drops score the most and build a combo multiplier for consecutive Perfects. Good and normal overlaps still score points but reset or hold your combo depending on accuracy.
Your personal best is saved in your browser automatically. Submitting a nickname also adds your score to the global leaderboard.