Just a few quick pointers
I had a good bit of fun, but heres a few things to improve on: Art: The houses aren't terrible, but it took me quite some time to even realize what they were. This could have been fixed with a window or two occasionally thrown in. The background was also a little dull and boring. Controls: While this wasn't really a big deal, i think that the option to use the up arrow in place of the space bar would have made a nice feature (seeing how im too lazy to use both hands xD) and Gameplay: While this was fun for a while, it got boring fast. Maybe you could throw in a hazard or two? maybe a bird or a chimney to dodge? another small detail i would have appreciated, would be an extra jump in place of the "Higher jump" upgrade, seeing how the higher jump took a little adjusting to, whereas the extra jump would have been optional. Well, that's about it, had fun! :D