Of the orignial MGS i have the normal PS1 version (which i have played countless times getting a quicker time everytime with a best time of 2 hours 23 minutes ), VR missions (which i dont count really) the Twin Snakes version on the Game Cube (the reason i bought a Cube) which is apparently hard to get now, and i have the MGS Digital Graphic Novel, so i really only have 2 playable versions but i am including the DGN as a version aswell
I also have MGS 2 Substence, MGS 3 Snake Eater (soon to have Subsistience sp), Metal Gear Ac!d 1 and 2 and hopefully i will have MGS: Portable Ops by the end of this week which is the brand new one which looks awesome