Punch. Vacuum. Shred. Escape.

You wake up in a concrete cell. The walls are almost thirty metres thick, and all you have are your fists. Every punch breaks the wall into chunky cubes. Vacuum them up, feed them to the shredder and every cube turns into cash. Spend it on harder fists and a bigger vacuum, and keep digging.

Every punch breaks something

• Walls made of thousands of cubes: every punch carves out a real hole

• Start with a few cubes a punch, end with hundreds at once

• Charged punches, dynamite and C4 for the rock that won't give

• Rubble flies, bounces and piles up on the floor

You are not the first one here

Others tried to dig their way out before you. Somewhere in the rock are the rooms they left behind, and the notes they wrote. Find them, piece together the code and open the door. Every new game is a new prison.

Upgrade everything

• Faster, wider, harder punches

• A bigger vacuum, from a little dust-buster to a twin-tank turbine

Dig for more than rock

• Eight kinds of rock, each harder than the last

• Gold, watches and crowns buried in the walls for a big payday