Look before you hop
Cross the stream. The next stone is front-left, straight ahead, or front-right. Read it, tap that side with your thumb, and you hop. The stone you land on starts sinking the moment you touch it, so if you stop to think, you're in the water. Score is stones crossed.
That's the whole rule. A run is about thirty seconds. Two or three while the bus is late, one more before bed.
There's no menu. Open the app and you're standing at the stream; the first tap is the first hop. The coin and stone counts at the top left are what you've collected and every stone you've ever crossed.
The next stone is always in one of three places: front-left, straight ahead, front-right. Tap that side and you hop there. The stone you land on starts sinking the moment you touch it, so if you stand there thinking, you're in the water.
The big number is stones crossed this run, and "Best" marks the stone your record sits on. The figure at the top right is how fast you're tapping.
Now and then a stone has a coin on it. Step on it, it's yours. Spend them on a duck, a turtle, a frog, a fox, a rabbit, a dokkaebi goblin, a jangseung guardian post, a Hahoe mask, a kid with a kite. The one you start with is a pebble wearing headphones. A stone crossing stones.
Pass a hundred stones for the first time and you pick one free. Six more come only when you pull something off; the shop shows a one-line riddle for each. Tap the character in the middle and it does its move.
The only things to press are three zones at the bottom of the screen. The very first run draws them as arrows; turn them back on in Settings any time. One thumb, portrait only.
It's your eyes that matter, not your hands. Reading where the next stone is, is the whole game. The first falls are usually a misread, not a slow thumb.
Early stones sink lazily. Past sixty they get quick. The sky moves from morning through noon and evening into night while you cross: evening comes after a hundred and ten stones, night after a hundred and eighty.
Every twenty-five stones there's a wide rest stone, and the path splits there. Either side is stone, but only one side's first stone has a coin. You can see it before you reach the rest stone, so you can choose ahead.
What isn't there at a fork is "straight ahead". Tap that and it's water.
A fork. Either side is stone
When you fall, the number slams in and the line under it says which stone you missed and what you read it as. If you beat your record, that line says by how many stones instead.
Past the best by 7
The Again button is up in under a second. We don't give you time to mourn.
There are five kinds. The pictures are cut straight from the game.
The ordinary one. It starts sinking as you land: 0.85 seconds to go under at the start, about 0.34 by stone sixty. Most of the path is this.
One stone in seven has moss on it. It behaves exactly like the plain one; it's a tick mark so you can see how far the path has run.
One every twenty-five stones. Wider than the rest and it sinks at half speed. Breathe here. This is also where the path forks.
About one stone in five has a coin over it. Step on it, it's yours. At a fork only one side's first stone has one, which is how you pick.
One gold stone sits where your last best ended. Pass it and it's a new record; the screen says "Past the gold stone" the moment you do.
Free. No login, and we never ask to track you. Works with no connection.
There is exactly one ad: on the end screen, tap it if you want this run's coins doubled. Don't tap, no ad. Your records aren't sent to a server. What goes where is written out in the privacy policy.
iPhone. English and Korean.