A type of social dilemma in which players harvest resources (usually tokens representing money) from a common resource pool of known size, and after each trial the pool is replenished at a predetermined rate. Players are free to choose, within limits, how much to take from the pool, and it is in each player's individual self-interest to take as much as possible, but if everyone behaves greedily, then the pool is exhausted and every player suffers. One popular type of resource dilemma is the commons dilemma. The resource dilemma research paradigm provides a useful model of everyday social dilemmas involving conservation of natural resources. It is also called a resource management dilemma or a resource conservation dilemma, and the corresponding experimental games are sometimes called take-some games.