Free mini-game

$COAL Strike!

A wall of rock hides buried diamonds. Chip your way in and haul out every gem — before the seam caves in on you.

Level 1

Gems 0/0

Run score 0

Veteran

Wall durability40 swings

Ready when you are.

Your tools — tap to switch (1 / 2)

Pickaxe Deep · 1 tile 1 swing

Hammer Wide · 3×3 3 swings

Buried in this seam

Your best 0

Part of $COAL — the first idle GameFi experiment. ⛏️

Dig for diamonds

Dig down through seam after seam. Clear every gem to descend — go as deep as you can before the wall caves in.

Pickaxe — digs deep on a single tile. Costs 1 swing.

Hammer — clears a shallow 3×3, but a big swing costs 3.

Supply caches — uncover lanterns & crates to refill swings and dig deeper.

Clear all gems to descend. Score stacks every level.

Choose your seam

Apprentice46 swings · 8×6

Veteran40 swings · 9×6

Brutal38 swings · 9×7

Your best here: 0

Run score

Stake your claim on the leaderboard