Good game, but fatal technical flaw
While the game and concept are both quite good, it suffers from an error where after upgrading, all ship parts (including the basic gun) are erased, making it potentially impossible to continue in the game. This coupled with the fact that there is no "erase data" button have made this game completely unplayable for me now.
Evidently this issue has been fixed in v 1.6 on other websites, but it doesn't appear here nor on ArmorGames' official website.