Four modes
Classic: climb as high as you can while the screen rises faster every 20 seconds. Sprint 100: race to floor 100 on the same tower every time, so times are comparable.
Chaos: a new twist every 14 seconds, from windstorms and low gravity to mirrored controls and sliding ledges, stacking two at a time later on. Rockfall: dodge what falls from the sky; three hits and you're out, and every 100 floors gives a heart back.
Five climbers
Fig, a runaway kid in a stolen goblin helmet, balanced in every way. Vix, a fox thief: the highest top speed, but slippery. Tad, a frog with sticky feet that grip instantly.
Bram, a stone golem with a huge standing jump but heavy in the air. Flit, a bat with a bandaged wing: floaty gravity and the best air control. Everyone but Fig is unlocked through achievements.
A tower with ten zones
10,000 floors in 100 tiers, from Cellar Stone to The Summit. Each zone has its own sky, walls, musical key and living surroundings: torches and bats, dripping icicles, swinging lanterns, turning gears, thunderstorms, glowing crystals and shooting stars.
The ledges are placed fresh every run, always within reach of the floor below. Every tier you reach becomes a starting point for your next run.
Goblins and the Goblin King
In Classic, Chaos and Rockfall a goblin shows up every 30 to 55 seconds and chases you up the ledges. Stay ahead for 20 seconds and it gives up, for bonus points; stall and it knocks you down and steals a quarter of your combo points.
From floor 9,900 the Goblin King chases you all the way to the summit, and he never gives up.
Big screens and older phones
On a tablet, a desktop window or a phone turned sideways, the Level width setting stretches the tower: Normal, Wide, Huge or Fit screen. Wide levels carry several routes side by side, and the game pushes back with a faster tower and quicker goblins. Wide runs keep their own high-score lists.
On older phones, Low FX mode lowers the resolution and turns off extra effects, and it switches on by itself when the game sees it struggling.
Look and sound
An original dark soundtrack of 43 tracks, synthesized live in code, that speeds up as the tower does. Every themed tier has a song of its own, and the backdrop, walls and music melt from one tier into the next instead of cutting.
Full-screen swipe-and-tap controls, haptics on Android, and settings for volume, graphics quality, screen shake and vibration.