Cobaltite Blue Tunnel

Dig to start!

What is it?

Play Cobaltite Blue Tunnel free — a tunnel streaked electric blue, then branching tunnels, richer finds. Hire pickaxe crew and watch passive Cobaltite grow…

How to play

1. Dig the glowing centre to earn your first Cobaltite.

2. Open the Crew tab and buy your first Pickaxe Crew to start earning automatically.

3. Spend on Boosts to multiply taps and specific crew output.

Why you'll love it

✦ Signature Mining Empire scene — a tunnel streaked electric blue.

✦ Six tiers of crew from Pickaxe Crew to Core Driller.

✦ WebAudio sound with mute, haptics, reduced-motion — plays instantly, no download.

Play Cobaltite Blue Tunnel free

No download. No sign-up. Just dig and play.