needs more difficulties and/or modes like an unlimited assault on a single city, cash limit, and multiple monsters attacking in unison. it's good now but i feel like a couple of things that are REALLY challenging would be incredible if done right. i wish the surviving units would not just 'disappear.' I should be able to reuse them, especially the mines
 "Man or Monster"){kind=icon}
 "Shop Empire 3"){kind=icon}
 "Dream Car Racing 2"){kind=icon}
 "Dungeon Warfare"){kind=icon}
 "Zumbi Blocks"){kind=icon}
 "Necronator 2"){kind=icon}