Excellently fun game that takes things back to the basics, and it works, its a breath of fresh air.
If you played Rocket Knight Adventures 1 and 2 before, then you'll enjoy this game just as much, the gameplay is pretty much the same as the classic with a few improvements made here and there.
The game still comprises of platforming segmants, boss battles and of course, the flying segments which play in the same way
a side scrolling shoot'em up plays, all in all, a nice variation and all of these sections are fun in their own way.
The music and sound effects are nothing to write home about but they do a good enough job with a few memorable themes here and there.
The graphics are the biggest change in this game as it is now 2.5D and it looks great, nice and cartoony and it keeps the feel of the originals whilst updating them and it looks lovely.
My personal opinion : If you're gonna go from a side scrolling 2D game, and try to give it a modern spin, keep it 2.5D, I think this is where the Sonic Series lost control and came off the rails a bit.