nice old-fashioned platformer
some pretty good work on this, but there are a few issues. as others have stated, the gravity switching mechanic is somewhat cliched by now, but it does make the platforming puzzles more interesting and complex. another somewhat nitpicky complaint, the jumping is somewhat delayed and drawn out, though this could be explainable by the space-age motif. finally, i, along with many others, think you could do better than this. maybe ramp up the difficulty a little and set out to make a regular platformer. i think you'd be suprised at the positive response.