Every Playtech casino slot machine game enthusiast is welcome to participate in the thrilling sea life theme slot machine game, they named it Great Blue. It offers amazing graphics and animations. The game's features include free game points, wild symbol features, and scatter plots. Big Blue's RTP (returning player) is 94.3% below normal, so if your goal is a bonus, you must think twice before playing this online slot machine. It also has a relatively uncommon gambling mechanism that allows gamblers to magnify his spending more.