Fantastic. One bit that would make things a little less grindy would be to have an "auto mine". I get the auto target feature, but it would be cool if I could just let the craft do mining runs for 20 minutes in the background. Kind of allows an idle feature component of the game. Maybe make it a piece of equipment once the player has grinded for a while. LOVE the game though.
Here's how to get around the bugs until they sort it out. Minimize the use of elevators as much as you can. Go only 3 levels high until you can research and afford the tubes. then DESTROY ALL THE ELEVATORS
Need to have a replay wave option. It sucks to make it all the way to the last wave on day 5 and get overrun and have to start all over. good concept, needs a few more features.
sandbox....
In real life the Germans could throw them farther. It was a stick with the frag on the end. They could throw those things probably twice as far.
Good game, but needs badges and it gets really slow after awhile. Best strategy is to save your money. That 10% really makes a difference when you have some $$$ in the bank.