It'd be very nice that when you buy an upgrade for one of the idle minigame boxes, it'd take that amount off for the upgrades after it, as you can't sell those upgrades to get 'wasted' money back.
We need more games like this. I think one similar to this is Arcane Weapon, but I hope the developer of this game makes a 2nd Mike Shadow. This game is really fun. :)
so there are neighbors, boring neighbors, annoying neighbors, rish neighbors, zombie neighbors, and more deadly neighbors. Son... it is time grab the chainsaw...