Onyx Cavern Crew

Dig to start!

What is it?

Play Onyx Cavern Crew free — a black-walled cavern, then darker onyx, darker profit. Hire prospectors and watch passive Onyx grow even while you're away. No…

How to play

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

2. Open the Crew tab and buy your first Prospectors 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 black-walled cavern.

✦ Six tiers of crew from Prospectors to Planet Drill.

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

Play Onyx Cavern Crew free

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