I hope the CM of GOG acknowledge that I'm asking the Treyarch/Beenox (PS3/PC/Xbox 360) version of the game, instead of the Vicarious Vision (PS2/PSP/Wii) Release. Having played all of them the Treyarch release is my favorite. I like the VV too, but the collectibles and the minigames are just suck. And there is a story & cutscene inconsistency.
Problem with the PC release is that Beenox capped the Framerate to 30 and there is so many issues that it's written in the PCGamingWiki. And also, because of Safedisc installer, it required me to use the disc again to uninstall. With GOG one-click installation, this game is golden. Along with the bugs they could patch. I dunno, Treyarch NGL is ported poorly here by Beenox. Maybe they were still learning back in the day, before becoming a slave to Call of Duty.