nice atempt
the game concept is good, fun gameplay, overall nice graphics and music, but too long. and it gets botiring after you get all the upgrades.
maybe after you fully upgrade your ship, you can buy a cannon, which you can shot and will propeler you further.
and the flips kinda bug me. if you do more than 1, you still get points for 1. and if you do back and front flip, you get zero pints.