Abstract: Systems, methods and media for controlling online video games are disclosed. For example, a controller system can receive first data associated with a game played at a player platform. Second data can be generated based on the first data, where the second data enables a viewer platform to provide a game participation feature(s) associated with the game. The second data can be transmitted from the controller system to the viewer platform. Third data based on the second data can be received at the controller system, where the third data is based on an interaction of a viewer with the game participation feature(s). Fourth data can be generated based on the third data, where the fourth data enables the player platform to alter the game based on the interaction of the viewer with the game participation feature(s). The fourth data can be transmitted from the controller system to the player platform.