In what order should I play the Metal Gear games?

[KLXVER]

Sal.Paradise said:

'Supervising'. Lol. 

And Konami themselves don't care for it:

That was a remake made by Silicon Knights. We supervised it but we didn’t create it directly and we wanted to make sure that everything in the HD Collection was canon. Everything that goes into there is something created directly by Kojima Productions and Kojima himself. So that is the reason why Twin Snakes was not included in HD Collection.

Yes, nothing would have gotten into that game unless Kojima said yes to it...