Methods and systems for awarding experience points to players of video games are disclosed. A video game such as a vehicle-based combat game may award experience of different classes, which allows control over the pace at which certain players advance through the game. Users may be awarded multiple classes of experience points, where a first class of experience may be restricted for use only in unlocking objects in a tech tree of the vehicle in which the first class of experience was earned vehicle, whereas a second class of experience may used to unlock any vehicle or module, not limited by tech tree. In some aspects, experience and/or vehicles/modules may be exported between video games.