It's pretty much impossible to name just one game, and it's even harder considering how many genre there are in this amazing media, but if i have to pick just one game, it would be without the doubt MGS1:
- Revolutionary AF on its time, with incredible atmosphere
- Best Bosses on any video game ever
- One of the best story on any game, and my personal favorite of all.
- Easily one of the best, if not best, main character of any game, Aka the one of only legendary Solid Snake.
And i can keep going like this all day, but gotta stop at some point, right.