Cute mammal-caring games like  SuperPoke! Pets, SPP Ranch! and SuperPocus,and aquarium game Top Fish are more virtual worlds than games. Slide began testing out virtual marketplaces in some of these apps in January, letting users create their own virtual goods, sell them and make money, similar to aspects of virtual worlds like Second Life and IMVU.

ISG reports on Slide's growth through facilitating content sharing with their games and 'just for fun' applications. Not that surprising it works, really - yet they seem to be spearheading the pack.