As for the reason why this 5 reel, 20 payline slot is very popular, it may sound simple: it can extend and replace the wildness of all symbols, including Scatter. You must play the Dolphin Reef yourself to see if it is fun for you. However, this allows you to get some clear wins before triggering a free spin or bonus game, and many slot machines may offer the opposite result. Different reward rounds certainly look very attractive, but if they need to be triggered forever and your balance is almost zero by then, does that feel good? Are you starting to play now?