Clay Dig: Merge Miner

Two shovels make a better shovel. That is the whole plan.

Drag two shovels together and get a better one. Swing it at the ground and the ground gives way — dirt, then stone, then copper, gold, diamond and the purple stuff nobody can name.

Clay Dig is a merge game with something underneath it: every tool you build is measured against rock that fights back, and the deeper mines need tools you do not have yet. Everything in it is modelled in plasticine, down to the fingerprints.

• Twelve tiers of digging tool, from a wooden spade to an amethyst monster • Six mines to open — meadow, desert, jungle, snow, volcano, crystal • Blocks that crack before they break, chests that are worth the detour, and a rock golem who is friendlier than he looks • Missions and achievements that ask you to go deeper rather than to wait longer • A daily bonus and a prize wheel

No account, no sign-up, no real-money purchases: every price in the game is paid in coins you dig up.