I can cheat jumping off the screen, and the "stop" is unnecessary. very unnecessary: I finished the game using only on level 14.
This could be a fine game, however, there are several flaws that... just make it not that great. First off, You don't really explain anything in the game. You leave it up the the player to figure out EVERYTHING, including that jump is the up arrow key, not the space bar like your comments say. The controls are sometimes unresponsive, causing deaths for no reason at all, and a few of the levels require absolutely perfect usage of the somewhat clunky controls in order to be completed.
Additionally, the ability to stop is very limited. While this in and of itself isn't necessarily BAD, there's a bug that makes it much worse. after a while I noticed a counter at the top for how many times I can stop in a level, and regardless of what that counter said I could only ever stop once, as that dropped the counter to zero. As a general rule, you should strive to find such issues before releasing a game to any public place.
Overall, while this could probably be something great eventually, and you seem to have the skill to make it so, it's just got too many flaws and bugs for me to consider good. A for effort, but sadly a solid D- for just about everything else.
Pretty challenging. Only thing is, space bar doesn't always seem to work for jump. The up arrow does, though. Once I figured that out, I liked it better.
it is a nice game, I like the idea, it is a bit simplistic but there is no problem in that. It can be enjoyable, though there are slight problems with the physics of it, in particular relating to jumps that make it a little harder than it should.