Oh, you just thought they tighten up the graphics a bit and call it a day, huh? No way, José -- converting PSP games that run at 480 x 272, 30 frames a second, to full 1080p, 60 frames a second is no small task. Ready at Dawn had to get its handsdirty and create a custom PS3 version of its internal engine for God of War: Origins Collection, Nathan Phail-Liff recounted on the PlayStation Blog today.

"We ended up going through every single character in the game and doubling or tripling polygon count by hand, as well as up-rezing and re-painting every texture across both games at 4x resolution on both characters and environments," Phail-Liff said. He also said Ready at Dawn had to re-render every cutscene from Chains of Olympus and Ghost of Sparta in the new PS3 engine. Finally, there's also going to be full stereoscopic 3D support in both games.

God of War: Origins Collection launches for the PS3 on September 13, 2011.