Zoo Tycoon
Prisoners dig tunnels to escape with a spoon. Also they trade with inmates and guards to earn toilet paper currency.
Fast dig with a spoon, plan moves, and avoid attention, to escape.
You dig with a spoon, shovel, or anything found, trade valuables, and upgrade skills. The main mechanic is digging tunnels and the objective is to escape.
Watch for guards and avoid attention while digging. Plan moves and trade with inmates to earn toilet paper for upgrades.
Q: What are the controls? A: Dig with a spoon, shovel, or anything found.
Q: What is the objective? A: Escape prison by digging tunnels.
Q: What is a stated feature? A: Trading with inmates and guards to earn toilet paper.
Q: What is the main mechanic? A: Digging tunnels to escape.