To devs: intended or not, when you close a weapon's description, all its cards make noise. Like, the "Card Close" sound is played multiple times at once.
How is this called tycoon if we cannot see the profitability of each investment?! Not only we cannot lose money, we cannot optimize our profits rationally.
The next mindless idle game.
You should NOT upgrade anything apart from generators and repair stations. Upgrades only save up on building space, while not upgraded units can be sold with no loss. THELs are needed only against motherships.