Probably my least favorite level out of the sonic series, for a variety of reasons. This levels difficulty is very much carried by 2 or 3 parts, with all of those parts being near the end, with the rest of the level being easy enough to the point where you can turn your brain off completely for the gameplay. With enough practice, it's pretty easy to get to 60% about every attempt. This makes the level quite boring to play. None of the parts, besides Glittershroom, stand out as particularly fun to me. Viprin's memory ball being back is frustrating as this essentially set the standard it would appear in every future sonic level, even though it is consistently the weakest part in all four of them. I also find that this level produces far less energy than the other levels in it's tetralogy, despite the song easily offering enough. As stated before, Glittershroom is easily my favorite part, though Evasium is quite fun when you ignore that it's much harder than everything before it. The design doesn't really stick out for 1.9, though I would say it's better than Supersonic in this aspect. Due to a lot of the gameplay requiring no real focus once learned, and the numerous chokepoints near the end, I'd say this is the weakest in the sonic series. Glittershroom is better than everything in Supersonic though, I adore the swingcopter.