Alright,
I am currently in the process of going through games that are on ArmorGames.com (FYI, GemCraft Chapter 0 is great). One of the games I found was called "Fancy Pants Adventures". Sounded dumb, so of course I had to try it out. And, if you need a quick Sonic fix, this is just the game for you. It transported me back to the age when Sonic was GOOD in his 2D era. Of course, you are playing a stick figure with guess what? Fancy pants 
. Anyways, there are two worlds available, the first at least is somewhat short, but it is many-pathed (like a good Sonic game) so you can get some good fun in. Also, can you collect all 5 trophies?
Enjoy!