TOWER STACK
Skyline Timing Challenge
Skyline Timing Challenge
Your mission is to construct the tallest skyscraper possible. Time each drop with pinpoint accuracy to keep your building upright and steady.
Blocks slide smoothly back and forth across the top of your tower. With every tap or click, the moving slab drops directly down onto the existing stack.
Any portion of the block that overhangs the block below will be sliced right off and tumble away! With each imperfect drop, your foundation becomes smaller and smaller.
If you align a block almost perfectly (within 3 pixels), the game rewards you with a PERFECT SNAP! Successive perfect drops give rewarding audio chimes and slightly increase your block width.
As your score climbs higher, blocks move progressively faster. Stay focused, anticipate the rhythm, and test your reaction limits!
A colored block glides left and right above your tower foundation.
Tap anywhere on the screen (or press Spacebar / Enter on desktop) to release and lock the block.
Ensure the block lands on top of the slab below. Overhanging edges get cut off, shrinking your landing area.
Earn 1 point for every placed block. If a block misses entirely, the tower falls and the game ends!
Tower Stack stores minimal local state directly on your client device using HTML5 LocalStorage:
This data remains on your device and is never uploaded to private game servers.
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By launching and interacting with Tower Stack ("the game"), you agree to abide by these Terms of Service. If you do not agree with any provision, please discontinue use immediately.
You are granted a personal, non-exclusive, non-transferable license to play Tower Stack for entertainment purposes. You agree not to reverse-engineer, exploit, or disrupt gameplay mechanics or advertising units through automated bots, scripts, or malicious code.
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Questions concerning these terms should be addressed to: [YOUR CONTACT EMAIL].