Action Points —
Some modern games—that is, games developed since the mid-20th century—allow each player a certain number of “action points” to expend during their turn to accomplish a variety of tactical objectives. Action points are a kind of currency to be spent, occasionally to be saved up or even invested. Most of the time a consistent number of action points are allowed each player, but some systems give players a chance to acquire points in a variety of ways, from push-your-luck die rolls to random card draws to purchase via some parallel currency. Action points grant the player many choices limited by the cost of the available actions, and they also place a limit on the possibilities - a “risk/reward” balance - that keeps the action point economy fair throughout the game.