Abstract: Techniques are described for providing functionality and information to users, including providing promotional information and opportunities to users of mobile devices in manners that are based at least in part on activities and locations of the users (e.g., based on games played by the users on their mobile devices and/or based on user satisfaction of system-directed tasks associated with offers or other activities). At least some of the promotional information and opportunities may be made available by various companies or entities that provide products and/or services (e.g., retailers, merchants, wholesalers, distributors, etc.) and/or by various companies or entities that provide advertising for available products and/or services. Various types of activities may be defined and used to provide promotional information and opportunities to users of mobile devices in particular embodiments and situations.