Methods, systems, and computer programs are presented for online game cooperation. One method includes an operation for receiving a first request from a first user to place a game asset in a first game board of the first user. The game asset is associated with a task to be performed in the game. Further, the method includes an operation for receiving a second request from a second user to place the game asset in a second game board of the second user. The first user and the second user make progress by interacting with the game asset in their respective game boards. When the first user or the second user receives a transactional reward for interacting with the game asset, the transactional reward is also given to the other user. A final reward is given to the first user and to the second user upon completion of the task.