I never got into the series while it was ongoing. When I went back and tried later, I found myself utterly unable to do much with them. Like most PS1 games, it just didn't age well. Clunky and unintuitive controls, and poor explanation for enemy detection. I gave the game up before even finishing the first mission. It was nearly unplayable.

So I never made it to MGS3, even though I own it. And I probably never will.