Seven 7s

Seven 7s is a unique game with only one pay-line, innovative rules and features. At the start, there is also only one reel with one giant symbol. If this is 7 on the pay-line you add a new spinning reel to the grid. If you are lucky enough to land another 7 or 2x symbol, which is the wild multiplier, you continue to add reels. You will get an x2 boost of your payout. This way you can expand the grid to contain up to 7 reels in total.