In personal computer games, a spawn installation is an installed copy of a game that may only be used to play in multiplayer mode, or otherwise limits the amount of single-player content accessible to the user. Additionally, some spawn implementations only allow the user to join games hosted by the installer's cd-key. There are several purposes for a spawn installation, including but not limited to creating added value by allowing the owner of the game to experience the multiplayer mode with friends and demonstrating the game to more potential buyers.