I'm getting a bug where the store's empty space has filled with footprint tiles, so I can't build anything. When I attempt to build in a spot that should be eligible, it drops the footprint tile, but not the item I want to purchase.
I think a cooperative mode would be great. If the beasties make it through one maze, they have to survive the other maze. Whoever makes the kill gets the cash, maybe?
 "Blue Knight"){kind=icon}
 "Recordshop Tycoon"){kind=icon}
 "Starland Multiplayer TD"){kind=icon}
 "Battalion: Nemesis"){kind=icon}
 "The Escape Game"){kind=icon}