The RenderWare engine had powered all three 6th generation franchise instalments that had propelled the developer to stardom.
To better utilise the technology in the PSP, the developer dropped the RenderWare engine for an in-house built engine. With a new console came new tech, of which Rockstar was readily available to take advantage. The PSP introduced PlayStation fans to a whole new form factor, allowing them to take console-quality games anywhere.
