Wow! Without any doubt I can say that it is the best sonic fangame that I have ever played. The bosses are amazing! this is the game made with GM that I've enjoyed the most. I haven't finished it yet, because I don't have so much free time, but when I have a bit more I will continue. One more time, excellent job
Spoiler
I have just defeated tails doll!
EDIT: I have finished it! you should make a sequel
Pretty cool. The character's movement was a bit too floaty for my taste, however. Also, I would have liked to have been able to hold the mouse buttons to shoot, rather than having to press them over and over.
Thanks for the comment. Some people told me the same about the gravity... but I like it, anyway for other games I will consider all this comments. About the mouse, I think that if I were included autofire the game would be easier.