Aurum

Free Mines Game: Mines on Aurum

A 5×5 board hides from 1 to 24 mines. Turn tiles over one at a time: every gem raises the multiplier, a mine ends the round. Cash out whenever you want to keep what you found.

The mines are placed before you start, from your own seeds, and you can verify their positions afterwards.

Theoretical return: 97%. Played with Crowns, which have no real-world value.