First impressions: First zone is wonderful. Fast, interesting, full of secrets. I absolutely love how it plays, though it might possibly give you too many lives. I'm not totally sold on suggesting lowering the ring count yet, but that's the biggest criticism I have right now. I left the zone with about ten lives and I didn't play that well. Second zone is really fun as well. I like the new gimmicks a lot. It feels like the quintessential classic Sonic urban level that we didn't ever quite get. (Starlight Zone is close, but it's more of a highway theme.) Maybe add in some more building-esque tiles to hammer in the trope? Also, one major criticism for this zone. That mini-boss intro is utter bullshit. I had died once beforehand by getting crushed between moving platforms. Fine, no biggie; happens all the time. However, remember how I said I had about ten lives at the end of the first zone? I got a game over facing that mini-boss because it kept crushing me at the very end of the section because I could land far enough to the side. One-hit kills are pretty terrible in general, but for the second mini-boss in the game? Definitely sours the overall fantastic impression of the game I had up to that point. All in all, though, this is a very professional fangame and I can't wait to see what you do with it.