Hello,Sotaknuck. I'm letting you know that your game is fantastic and, even if I've never played 3D Blast before, I still had a blast with it. By the time I write this, I've played through the Sonic campaign+ the Chaos Emerald. Speaking of it, the Special Stages were kind of difficult for me at first ( I always had trouble with Sonic's 2 kind of stage), but once I got the gist of things, it felt like a breeze and I was actually having fun with them. The diffuculty is well balanced ( though i had trouble with Panic Puppet zone's boss battle act 1). From what i've seen, the sprites looked really polished (especially for Tails,Knuckles and Super Sonic) but I will say that the very final boss of the game once you have the Chaos Emerald looked odd, by that I mean he looked more 8 bit than 16.
Overall, as you can already guess, I had a great time with Sonic 3D in 2D and I look forward to any project that you might do in the future
Sincerely, A fan of you work