What a fun game that was.
+ The length of the game was decent and the theme is interpreted pretty well for such a theme.
+ I like the different blocks. You used your strengths well to create this Space :)
Edit: I should really dive deeper into the design, so Imma extend this comment.
+ I like how you can strategise about your position and kinda outsmart the enemy placement (though I'm pretty sure that's intentional)
+ The game looks pretty retro
- maybe next time pick color scheme though
+ I love the simplicity of your design.