Systems and methods for managing virtual items across multiple video game environments

The present specification describes a system and method for aggregating user results, rankings and statistical data associated with playing video games across two or more games, normalizing the aggregated data to unified values and presenting the aggregated and unified data via an interface, such that data from one game may be fairly combined and/or compared to data from another game. The present system enables users of one game to trade game-related virtual items with users of another game by providing a normalized score or value for virtual items, thereby permitting virtual items associated with one game to be fairly compared against virtual items of another game.