Skyline
Stack sliding slabs into the tallest tower you can.
Runs entirely in your browser — no signup, and your scores stay on your device.
About this game
A slab slides back and forth above your tower. You drop it. Whatever lands on the block below stays, and whatever hangs over the edge is sliced off and falls away — so every drop that isn't flush makes the next one harder. Land one close enough to perfect and it snaps into place without losing a millimetre, which is how a good run keeps going: not by dropping fast, but by dropping accurately. The slab speeds up as the tower grows, though the speed is capped rather than climbing forever, because a game that eventually moves faster than a human can react has stopped testing skill and started flipping a coin. It's our first game in 3D, and everything you see is geometry generated in code — no models, no textures, no downloads.
Example
Twelve blocks in, a slab that lands a third of the way over leaves you a tower two-thirds as wide — and every future drop has to fit that narrower target. Three near-perfect drops in a row and you're stacking full width again, with a bonus for each.
How to play
- 1Press Start, then tap, click or hit Space to drop the sliding slab.
- 2Aim to land it flush over the block below — close enough and it snaps, losing nothing.
- 3Anything overhanging is cut away, and the next slab is that much narrower.
- 4Miss the tower completely and the run ends. Your best score is kept on this device.
Controls
- Tap / ClickDrop the block
- Space / EnterDrop the block
- ↓Drop the block
Features
- Real 3D, rendered with WebGL — no download, no plugin, no account.
- Perfect drops snap flush and pay a combo bonus that grows up to five.
- Speed rises with height but is capped, so late levels stay winnable.
- Follows your light or dark theme, right down to the block colours.
- Personal best saved on your device and nowhere else.
Frequently asked questions
How do I get a perfect drop?
Land the slab within a whisker of flush — about one part in eighty of the starting width. Get it and the block snaps into alignment without being sliced, so the tower stays exactly as wide as it was. Stringing perfects together also pays a bonus that grows to five points a block.
Does the game get impossibly fast?
No, and that's deliberate. The slab speeds up as you climb, but the increase stops at a ceiling. Past that point the challenge is the narrowing tower, not superhuman reflexes — a run should end because you misjudged a drop, not because the game outran you.
Do I need a powerful device?
No. The whole scene is a few dozen boxes, the render resolution is capped so a high-density phone screen doesn't do nine times the work for no visible gain, and drawing pauses entirely when the game scrolls out of view or you switch tabs. It should be smooth on any phone from the last several years.
What if my browser says it can't run this?
The game needs WebGL. If your browser can't start a 3D context you'll get a plain message saying so rather than a blank box. It's usually a setting — hardware acceleration turned off — rather than a limit of the device. Everything else on the site works without it.
Is my score saved anywhere?
Only in this browser, on this device. There's no account, no leaderboard and no server — clearing your browser data clears your best along with it.