Backbone Entertainment Inc. is a development studio formed in 2003. The company is notable for developing the PlayStation Portable action-platformer Death Jr. (2005) and the racing-platformer Sonic Rivals (2006). They also developed sports and licensed titles during this era, including NBA (2005), World Poker Tour (2005), and Charlotte's Web (2006).
The studio's early output heavily defined the library of the PlayStation Portable. By positioning the
Death Jr. franchise as a flagship showcase for the handheld's launch, the developer demonstrated the system's 3D capabilities. This effort yielded
Death Jr. (2005), its collectible
Death Jr. [Limited Edition] (2005) release, and the subsequent sequel
Death Jr. (2006).
Simultaneously, the studio established a partnership with Sega to spearhead the
Sonic Rivals franchise. This resulted in the high-speed 2.5D platformer
Sonic Rivals (2006), which performed well enough to secure a budget-line re-release as
Sonic Rivals [Greatest Hits] (2006). Beyond these platforming pillars, the developer specialized in adapting major intellectual properties for portable systems, delivering sports and licensed simulations like
NBA (2005),
World Poker Tour (2005), and
Charlotte's Web (2006). In later years, the studio transitioned its expertise toward rhythm-action gameplay, contributing to the
Dance Central franchise through collaborative development on motion-controlled dance titles.