Bouldering simulator

Bouldering in your browser – with real climbing physics

Cragdon is a free climbing game. You place every hand and foot yourself and shift your hips. Whether you stick the move depends on physics: pull direction, centre of gravity and your strength.

▶ Play for free

No download · desktop and mobile · no account needed
Note: the game itself is currently only available in German.

Climber on a bouldering wall with orange holds in Cragdon

What you get

⚖️

Real climbing physics

Every hold only works in certain directions. Slopers, crimps, pinches and hooks behave like in the gym, and bad footwork gets you pumped.

🎓

Campaign from V0 to V6

The tutorial teaches one technique per boulder: footwork, opposition, friction on slabs, slopers, dynos and heel hooks on overhangs.

🧭

Coach and demo

Stuck? The coach shows the moves right on the wall. Or watch the whole boulder being climbed for you.

🛠️

Set your own boulders

Place holds, choose the wall angle and set your own problems in the editor. With an account you can publish them.

🌍

Community and leaderboard

Climb boulders made by other players, earn points for tops and flashes and compare yourself with your friends.

📱

Desktop and mobile

Mouse and keyboard on desktop, a joystick plus dyno and chalk buttons on your phone. Portrait and landscape.

Screenshots

Route view showing hold types and pull directions — Read the route: every hold shows its type and pull direction.

Force view with load arrows on hands and feet — Force view: how much each hand and foot carries, and where your centre of gravity is.

Ready for your first boulder?

▶ Play Cragdon