Nice little game. Graphics are very clean. Love the little animation when pluto destroys an asteroid :D
But there are two things which can be improved:
- The controls are way too slow. You could try to speed up the control and do the same for the general game speed too.
- The game has an issue with full screen mode in the WebGL version. The text fields are scaling too big.
Other than, it's a solid game with a lovely story :D
If you want, you can also check out my game. I would reallly appreciate it if you leave a rating too ;)