Seven 7s is a simple
slot game that starts with a single reel. If a seven lands on that reel, it will lock in place. A new reel will then appear and spin. If a 7 lands on that reel, 2x the bet is awarded, both 7s lock and a new reel appears. This process will continue until a reel doesn’t land on a 7, with the win growing with each new 7 that is revealed. The first win is 2x stake for two 7s, all the way to 25,000x your bet if you land the titular seven 7s.
A 2x symbol can also land, and while acting as a 7, will double the current win. Other symbols on the reels, such as the Bar, will result in no win and the game will continue.