This is really fun, and nice. I wonder how people able to go past 500 points 

This is a pretty cool game! I just wish there was some more ways to extend my highscore as the enemies quickly fill up the screen but otherwise pretty fun.

Neat! I broke the top score a few times but it didn't stick and seems like only my first score made it to the leaderboard. Would be nice to have some way of countering the buildup of enemies, or might be good to always have a time extension onscreen somewhere.

I like this game a lot. Its simple, and it scratches that itch for classic style arcade games. Well done!

Nice job on the classic menu options, made the whole thing feel like a classic windows game. Clean build!