Some games, primarily those where player compete against each other, decrease the size of the game world as game play progresses. This imposes an outside influence that forces the players together and thereby into conflict.
Example: The game area shrinks in Bomber Man after players have failed to eliminate each other in a certain period of time to increase the tension of the game.
Example: One of the multiplayer levels in Half-Life allowed players to activate an air strike. All those not in a bunker complex when the air strike hit was killed, in effect reducing the Game World to the bunker for parts of the game play.
Shrinking Game Worlds have two prime characteristics: in what way the Game World shrinks and what activates the shrinkage. Having a uniform and predefined way in which the world shrinks, typically by using Tiles as a unit of the shrinkage, and how this is activated, most commonly simple a Time Limit, allows player to have Strategic Knowledge and make increases Conflict if potential for it existed to begin with. If players can control the shrinkage this allows Player Defined Goals anda form of Player Constructed World. The ability to control Shrinking Game Worlds can be used as an offensive ability as being caught in a shrinking area is often a Deadly Trap.
Shrinking Game Worlds are Ultra-Powerful Events that instantiateThe Show Must Go On. They increase Tension by limiting players' Freedom of Choice by creating Movement Limitations. If the events are caused by Irreversible Actions a Shrinking Game World can ensure Higher-Level Closures as Gameplay Progresses.
Instantiates: Strategic Knowledge, Movement Limitations, Ultra-Powerful Events, The Show Must Go On, Deadly Traps, Higher-Level Closures as Gameplay Progresses, Tension
Modulates: Game World, Conflict
Instantiated by:
Modulated by: Tiles, Irreversible Actions
Potentially conflicting with: Freedom of Choice