Abstract: A computer-based electronic gaming system is provided that maintains a persistent game world for one or more users or game players. The game system may provide a game world for a plurality of simultaneous users. Each user may be on a client device, and the gaming system may support a wide variety of simultaneous users and client devices. In one embodiment, the gaming system maintains a persistent game world for at least one user, wherein the game state for a user reconnecting with the gaming system is based on the game state for the user when they disconnected from the gaming system. In another embodiment, the user may reconnect with the gaming system with the exact same game state as when they disconnected previously.

Abstract: A facility for adapting states used with a first version of a game for use with a second version of a game is described. The facility compares the first and second versions of the game to identify dependencies on the state of the second version of the game not shared by the first version of the game. The facility automatically generates a rule to modify states used with the first version of the game to satisfy the identified dependency. For each of one or more states used with the first version of the game, the facility applies the generated rule to the state to adapt the state for use with the second version of the game.