A wagering game system and its operations are described herein. In some embodiments, the operations can include monitoring, at a wagering game machine, base wagering game activity associated with one or more base wagering games that are presented during a wagering game session. The operations can also include generating and transmitting one or more activity notification messages comprising at least an indication of the base wagering game activity to a player tracking server to cause the player tracking server to reward the base wagering game activity. The operations can further include generating and transmitting login and logout notification messages to a secondary game server to cause the secondary game server to determine secondary wagering game activity associated with one or more secondary wagering games presented during the wagering game session. The secondary wagering game activity can be used by the player tracking server to reward the secondary wagering game activity.