Tap a growing rock to smash through obstacles and bosses across areas.
A tiny pebble that once lost to an acorn.
Tap it and it grows. When it's big enough, it rolls.
It wears down a little as it rolls, but whatever stands in its way gets smashed.
■ How it plays
- Tap to grow, roll to smash, upgrade with ore. That's all there is to the controls.
- Ants, acorns, passersby, cars, high-rises… every area has new things to smash, and a boss waits at the end.
- Can't break it? Jump over it, or slam down on it as you land. One jump can make the run.
- Beat the boss and a new area opens. How far does it go? Roll and see for yourself.
■ Boss duels
- Can't smash a boss in one hit? A duel begins: 3 hearts, 15 seconds.
- Jump over ground shots, then land to COUNTER.
- Every area's boss attacks differently.
■ A rock that transforms
- 9 upgrades that change how your rock looks as they level up: iron rivets, glowing cracks, a drone swarm…
- 12 abilities unlock as you meet their conditions and apply forever.
■ That's not the end
- Make it to the end and start again, in a tougher world.
- Every playthrough unlocks a new rock skin and stacks permanent upgrades.
■ Our promise
- No ads. One purchase unlocks the full game.
- Try the first two areas for free.
- It only grows while the game is on. No offline rewards.
- Korean / English
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