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