▲ ▼ ◀ ▶  Move & dig through earth
◀ ▶  Push rocks sideways
R  Restart current cave

Collect all gems to reveal the exit.
Dig through dirt to find your path.
Rocks fall when unsupported — don't get crushed!
Rocks roll off other rocks and walls. Plan ahead.
Creatures roam the caves — avoid or crush them with rocks!

Each cave is randomly generated. Good luck.