I tried your game (demo version), so thought I would give you my thoughts on it. I hope you know I mean this all in the friendliest way
It was somewhat hard to find at first, keep working those rankings. For “Space Fighter Infinite” I found it at number 22, and for the keywords “Space Fighter” I could not find it (looked for it all the way to number 225).
on a nexus 5:
-Startup was a just a little bit slow.
-The big facebook button is AWESOME, seriously. I need to do the same to try and get the social element involved.
-Menu animations could be just a tad faster?
-Tutorial was very nice
-Gameplay was interesting and unique. Also difficult but I think it has a good learning curve as it is intuitive.
Overall:
Gameplay has a lot of quality, but there are a few things that keep it from having a “high-polish” feel. Mainly the menu graphics and the text that appears throughout the game. Some easy updates would definitely solve it.