The type of game is nothing new. That is to say, a game where you have to use some sort of propulsion to escape some sort of attraction and avoid obstacles. Wow, that sounded much better in my head, oh well.

BUT, the whole western theme is pretty hilarious.
ALSO, not many of these types of games (mentioned above) change the direction/location of the attraction/gravity.

-2 for the main game style not being new or original, but everything else about the game was great.

Sprites, amirite?

-5 for permanently damaging my hearing with the loud overlapping music.

-1 for short dialog screens.

+1 for more Sonic for no apparent reason.

And the standard discriminatory -2 for using sprites, rofl.

Not enough funny/parody games in the flash universe.
Hopefully you intended it as a parody, otherwise that would make it even funnier.

Anyway...
My favorite part was the fat stick-man falling on you. I was like "WTF, how was I supposed to know that would happen", lmao.

-1 for quality of drawing, to be expected from 3 weeks of flash.

-2 for no option to turn off that painful menu music, lol.

+1 for making me laugh.

-1 for making me try to dodge a falling fat man over and over. XD