Diamond Mine Megaways is a 2018 Big Time Gaming release and one of the earlier examples of the provider applying their Megaways engine to a mining theme — a pairing that has since become almost a genre unto itself. As one of the foundational BTG Megaways titles, it is worth understanding on its own terms rather than just as a predecessor to later, shinier releases.

The Megaways engine here supports up to 117,649 ways to win on a given spin — a number that entered slot discourse largely through early Megaways marketing and remains genuinely significant as a win-way ceiling. Bets go from €0.20 to €20 per spin. The underground mining aesthetic is functional: tunnels, pickaxes, gem symbols, a dark palette lit by miners’ lamps.

Pickaxe scatter symbols trigger the Free Spins round, which introduces diamond wild multipliers. These wilds substitute for standard symbols and carry multiplier values that combine with one another during wins, creating the multiplier stacking behaviour that defines the BTG Free Spins experience. No Bonus Buy is available on this title.

RTP is 96% and volatility is high. Maximum win is 5,000x the stake. The 117,649 ways figure means the Megaways grid is maximally active on its best spins, though in practice the volatility means those spins arrive inconsistently.

Diamond Mine Megaways is a historically significant slot that still plays well. It lacks some of the production refinements of later Megaways titles, but the core mechanic is intact and the Free Spins multiplier structure remains satisfying. Good for players who want to work through the Megaways family tree from the beginning.