Thank you! Yeah I winged a lot of the values as far as spawn rate, damage, etc and it seemed to work out ok :)
Hm. Yeah as far as the input, it takes whatever was last used, so the slightest mouse movement will send the ship flying towards cursor position. I could probably add a bit of a threshold to that. Also should probably add keys to do hack purchases w/ keyboard over mouse, so no mouse required at all, etc.