Justin Towell of Gamesradar writes: "Sonic games have always had at least one level that's perfect for speedrun competitions with your mates. Sonic 4 is no exception. Splash Hill, Act 1 is one of the most brilliantly-designed Sonic levels ever. It may not be noticable on your first play-through, but start looking for ways to shave seconds off your time and suddenly it turns into a monster. So here's my fastest run (so far) on the PS3 version of the game."