Slightly above average.
This game actually has a bit of promise going for it. First off, I thought it was just a stupid little game, but it's not. It's challenging. If it were just you controlling Jim with your arrow keys, it'd be another pointless, boring avoiding game. You've done something here that gives us a differentiation from the normal.
Well, in the controls atleast. I never noticed why you did it in that way until I was at the level with the slime. If I ran into a wall, I died. I had to go through the down arrow to get to the up one, so I had to make sure I was constantly not too low. I died many times on that level. And the ones after that made use of this principal also. It's a good game in that respect.
The downside is your visuals. The title screen is, by far, the best screen of the game. In looks, atleast. Your level title cards are bland. I could make something like that in paint and I have no creative ability at all. You could've atleast added some flare to this rather than just click on the paintbrush icon and paint something.
For the rest of the game? They were fine for them, atleast. The stick figure looked slightly better, if only for the fact that he's in strips you can see. The only thing not black or gray are the colored objects in the game. Besides that, everything is in monotone. Perhaps you could fix that by adding, I don't know, more colors?
Well, it woudn't be so great withought its music. I never once heard the same loop over and over again. The music kept me going, and didn't bog down the game by repeating itself, or being just too horrible.
If you make another game like this, please, try what I've said. Overall, it's not bad, but it's not too great either. I'd just play it once, like it, then never play it again because it dosen't have anything too special.