Ufo Hunter

Your game have controls?

This is a cool concept! I really like the idea of doing some quick math to make sure you have enough UFOs to get past an enemy. I might suggest making the scrolling speed a bit slower so there's more time to react and plan strategically, but the core idea is great!

The way that the whole chain of UFOs snakes behind you is really cool. I also like how you've tinted the enemy sprites more and more of a reddish color based on how much health they have. Lots of cool ideas and love poured into this game!