Full marks.
You get a perfect rating from me. There are some issues such as the window not being big enough for the game. I had to zoom in on my browser to see the whole game, though that may not be your fault. The game quickly gets overwhelming with how many balls there are per level. Cherries would occasionally appear in walls where you couldn't get them. A bit more variety in the things you have to avoid would be nice and maybe a multiplier for your score the longer you manage to avoid things as well.
But still, perfect score because you might be the only person I've ever seen to use The Game Factory 2 for something other than submitting the demo that comes with the program. You've actually shown creative effort, and I am so impressed by that that I'm giving you a perfect score. Keep it up.