Drop the block. Nail the center. Climb higher than the entire planet — then do it again.
It speeds up every block. Perfect drops keep you wide and chain a rising melody. One slip and it's over.
Tap to drop. That's the whole game. You'll get it in three seconds and chase it for hours.
Every score is server-verified by replay. No cheats on the board — just real climbers worldwide.
Bank diamonds every run and unlock skins that repaint your whole tower. Build a look that's yours.
Tap to drop a block on the tower. Keep it centered. Climb as high as you can — it only gets faster.
A block slides side to side up top. Tap (or press Space) to drop it. Overhang gets sliced off — miss the stack completely and it's game over.
Land dead-center for a Perfect — your block keeps full width and chains a rising musical combo.
String 10 perfects in a row to ignite Gold Rush — every block pays 3× diamonds until you slip.
Every 15th block glows gold. Land it perfectly for a +15 💎 jackpot (tripled during Gold Rush!).
Hit a 15-perfect streak and the next 3 blocks go double-speed for bonus diamonds. High risk, huge reward.
Bank diamonds every run and unlock block skins — Neon, Sunset, Gold, Aurora and more — in the Shop.
3 fresh objectives a day for bonus diamonds, plus one seeded Daily run that's the same for everyone. Build your 🔥 streak.
Every score is server-verified, so the global & daily boards are cheat-proof. Can you crack the top 10?
100% free, forever. No download, no sign-up — it plays right in your browser on any device.
Nope. Your best scores, diamonds, skins and streaks save automatically, and your runs sync to the global leaderboard.
Every run is re-simulated and verified on our server before it counts — impossible or edited scores are rejected. Real climbers only.
Yes. On mobile, use your browser's Share → Add to Home Screen to play STAK like a real app, even offline.
One seeded run per day that's identical for every player worldwide. Compare scores and keep your streak alive.
Land blocks and perfects, trigger Gold Rush, nail Golden Blocks and the Perfect Gauntlet, and clear your Daily Quests.
STAK is web-first today — add it to your home screen now. Native iOS & Android versions are on the way.
