The gameplay is pretty fun and the graphics are nice, except that the character models could do with some work, though they do have their charm as is. However, it's too unforgiving for newcomers, as it gives you only five lives before the game is over, with little to no opportunity to get them back. To solve this, I would've used a health bar (whatever you would've called it) instead, as well as different difficulty settings and modes, including the option to disable the fly or use another key to swat it. High score submission also doesn't work, nor is there a list for submitted scores, but hey, maybe you can fix that in due course.