Great game! Although it would be nice if it was possible to add targets to list with shoft or something. Or maybe filter targets? (for example only asteroids containing particular mineral?).
Also: Is that normal, that I have defeated the pirate number 9 or 10 (1800 hp) and they do not appear anymore?
I would like that this game was longer. As for upgrade suggestions, it would be nice it it was more visible which skills are on cooldown and which are not. Also time until skill has cooled down would be nice info.
a bug: if you choose to build a tower, then click on some tower and upgrade it you can still build the tower even though you don't have money. You get negative money counter. And can place many towers on the same spot