Game Type. Play Diamond Discovery online slot by Microgaming and SpinPlay and immerse yourself in the challenge of digging for massive payouts! In this slot machine. Try Diamond Discovery slot online for free in demo mode with no download or no registration required. To start mining the Diamonds, you can follow the steps. Check the paytable to see how and how much you can win. This is a licensed slot machine that generates random outcomes, and all you need is a good fortune. Play Diamond Discovery Slot. Play Diamond Discovery by SpinPlay Games. Diamond Discovery is a volatile mining slot from SpinPlay, and it plays out on 5x4 reels with 40 paylines. Play Diamond Discovery and over online casino games from the top game. . Play Diamond Discovery slot completely for free, without spending any money. Diamond Discovery is a 5-reel, line online slot game with bonus spins, instant play, video slots, multiplier, wild symbol, scatter symbol, mobile gaming. Diamond Discovery is a new casino slot from Spinplay Games where we go down the mines in search of some precious diamonds. %. Demo play for fun, no download or registration required. Genting Casino offers a unique gaming experience for online slots and casino games. Return to player. Slot Gods have rated this high volatility slot 4/5. The Diamond Discovery online slot is playable across a 5x4 grid with 40 fixed paylines. It has a % RTP and a max payout of x.