Pretty Good for what it is
It controls nicely (it's very responsive), the collision detection is good.
The navigating the ladder could use a bit of work -- that was just plain awkward.
And, it might just be me, but it appears that Mario's walk animation was backwards. It looked like he was doing a strange forward moonwalk.
Other than that, it's a great start. I look forward to see where this goes.
--mister. jones
Bad
The ladders don't work great, and there were many bugs.
it was ok
it was ok (I know its a demo) but there are little things like some of the backgrounds where to sloppy even for a demo and the music was so goddamn annoying
There are glitches
Glitches I noticed:
-You can't stand on an edge if your center is not over the edge
-Can't hit ceiling of the small tunnels when you keep jumping.
-When you fall through the gap in the clouds, you go inside the cloud
-The ladder doesn't work, and sometimes shoots you to the top in moments.