Great Lagoon is an underwater-themed online slot by Pragmatic Play. It features 5 reels, 25 paylines, and low to medium volatility. With an RTP of 96.64%, the slot offers a maximum win of 5,000x the bet. The Free Spins feature, triggered by 3 or more Scatter symbols, awards 8 spins with a 2x multiplier. Players can select 2 out of 5 items before the spins to potentially receive additional spins or multipliers up to 18x. The Free Spins feature can be retriggered, offering 15 more spins. Wild Symbols substitute for other symbols to create winning combinations.