Apartment Tower Defense

To play, you stake your apartment and some gold, and you use your resources to build towers and place them in a maze in the hallway leading to your apartment. Every day a wave of robots attacks your apartment. The towers shoot at them and try to stop them. You get gold for each robot you kill, but any who get through steal some of your staked gold. At any point you can look at the recording that shows your most recent round using html5 or whatever so you can watch the robots move through the maze and die. Maybe there can also be some cooperative element to make it more social with other apartment holders.