The art was nice, it was easy to tell what everything was. How everything worked was explained very well, and i was able to understand what to do very quickly. Some suggestions i would make would have different colored platforms, especially for platforms like the ones that have special properties. I would also suggest making it so the jump button was also w, I found myself pressing that instead of the actual jump button (spacebar), and as a result falling and dying. Overall, I think it was a good game that can be made even better with more time.