Aside from completing missions you can also venture into the Global Conflict area or do a wide range of side activities within the city. (articles.gamerheadquarters.com)
50 Number Line Activities is a set of 50 double - sided activity cards for teaching math skills with number lines. (hand2mind.com)
The game contains many side activities as well — one can participate in various parties, hang out with friends and contact other creators. (gamepressure.com)