When this game was announced, I had very low expectations for this game. Mainly because of one of the main developers of the game being Arzest (who is mainly known for making minigames in Wii Play Motion, Hey! Pikmin, and co-developing Balan Wonderworld), not having the greatest track record. After playing the game with two other players, the game is really fun. The characters are all very different from one another. Speed and acceleration are the same, and the ability to spin dash. Sonic can use the drop dash, Tails can fly, Knuckles can glide and climb walls, and Amy can double jump. Kunckles and Amy can also break big rocks. There is another character that is unlockable that also has a double jump and climb walls. Levels are well-balanced, with all five characters being able to comfortably get through each stage. Although the co-op part of the game actually seems more like an after thought. The camera has no idea who to focus on during gameplay, and it leads to a lot of players out running the camera, and getting reset back to another players position. Bosses really suck this time around, since they are very slow and can take up to 3 minutes for each boss. If they were an active challenge, I would have like them, but they keep players from attacking by making them wait in between attack cycles, which once again bring the game to a halt, when the game is fast paced in the normal levels. If you have friends to play the game in local co-op, then I would say give it shot if curious, as we did have a great time with the game. Single player, on the other hand, I'm not really sure, especially at this price point. I would wait for a price for those who are curious about the game.