The panel contains a button which triggers the AutoPlay function, as well as up and down arrows to regulate your total bet. The control panel has been designed to mimic a physical machine inside a bricks-and-mortar gaming house. The 5x3 grid sits within a purple border, beyond which lies the traditional control panel, home to all the usual buttons. Lurid crusts in various colours – pink, green, orange, red, purple, blue – fight for the viewer’s attention, appearing behind the reels. There’s plenty of coral on display in Double Bubble. Double Bubble is available on PC, iPhone, iPad and is a perfect slot for Android devices. As you explore the murky depths, you’ll look to play the Free Spins bonus game, which entitles you to ten complementary spins. The five-reel slot boasts 20 fixed pay-lines, on which users are tasked with building winning combinations from left to right. Double Bubble, from Realistic Games, is one such title.ĭouble Bubble first appeared in 2014. From Underwater Pearls and Deep Blue to Triton’s Treasure and Under the Sea, slot developers can’t help diving into the ocean and coming up clutching yet another new slot game. OK, I’m exaggerating a little, but we’ve certainly seen plenty of underwater-themed slots flood the market, if you’ll pardon the pun. Video slots with underwater themes have been around since the days of the Megalodon, the prehistoric shark that inspired Deep Blue Sea.