My 13 year old son and I spent the summer learning how to program games in Javascript. It was lots of fun and we learned how complicated it is to write games for desktop and mobile browsers.
Our goals were simple: 1-Have Fun, 2-Lots of explosions, 3-Fast paced and 4-Die and resume quickly. I think all four have been met. We sure had a lot of fun doing this. There are lots and lots of explosions. It can be tricky until you build up your energy shield.
Oh, and yes, there is no way to win. You always loose. Plutonians are very stubborn and they won’t call off their drones until their home is recognized as a planet again. Planet 9 Rules!
Recommend you start on Fun level 9.
Tip: Don’t let any aliens escape!