Game studios / Backbone Entertainment Game studio Backbone Entertainment 3 games in the catalogue ⏱ 2006–2010 2 platforms Games by the studio (3) Sonic Rivals · 2006 For the first time, Sonic builds around two characters racing directly side by side. PSP Sonic Rivals 2 · 2007 Adds team cooperation - the player switches between a pair of characters and combines their abilities. PSP Blaster Master: Overdrive · 2010 A WiiWare return to the NES classic; alternates driving the armored vehicle Sofia with on-foot shooting. Wii