Ignoring most of what has been said in this thread because I don't want spoilers and haven't touched the game yet, but I got it for free with my new graphics card. Thing is, I haven't played the previous MGS games. Well, I played one but can't remember anything about it, I was too focused on gameplay and zero on story (I was basically playing a friend's save because they wanted me to try it).

So uhm. Okay to jump straight in, or...? I've heard people saying you should play some prequel or something but honestly I have zero interest in paying money to play a prequel so I can play a game I haven't paid for. I looked for a MGS in a nutshell kind of video on YouTube but just got a whole lot of random videos that didn't serve the purpose.