Great game. Great quality, easy bosses, nice level design. I was having fun until I reached Oil Ocean. This is one of the worst sonic zones ever. Annoying enemies, lack of rings, and the worst one, The boss. First of all, you barely have any time to hit him, the first attack is easy, but his second attack (laser) is real pain. You cant dodge it, very fast, and 3 SHOTS per attack. All of this didn't make me mad but also the laser can make fire on the floor and upon touching it, my game crashes.