Oh crap, this will be hard.
Erm....
1. MGS 3
2. MGS
3. MGS 2
MGS3 is first for it's amazing ending. MGS1 is second because it started it all, and still holds up today. MGS2 comes in last, because, while it is an amazing game, it doesn't have anything extra special like the other two that makes it better than them.







