The graphics are very impressive! Graphically, the game could pass as a commercial release.
Too bad I can't quite say the same about the gameplay. The idea is simple, and doesn't bring that much new to the genre, but that doesn't bother me as much as the the controls and the general feel. The skidding itself is okay, but I think the amount of skidding is too big, in my opinion. It just makes the controlling harder.
Also, I don't like the fact that the height of the jump can't be controlled. Some games are okay even without the height control, but they're designed in a way that you don't really need to use small jumps. In this game though, small jumps would be useful in many situations. The problem is highlighted by the fact that a single jump takes over 2 seconds to complete, which is a lot more than in any other platform game I've played.
But luckily, all this can be fixed without changing the level too much =)
By the way, each time I start the game, I get this error:
action number 1
of Collision Event with object obj_Player
for object obj_savepoint:
Failed to save game to file beanstalkjumper_checkpoint
I also encountered a bug where I got stuck below a platform after jumping to it. A sound effect kept constantly looping when I was stuck. I couldn't get out by pressing left/right/up.
Hope this helps!