One of the best Playstation games ever.
You are Solid Snake, a "secret agent" of sorts. Your mission: locate the metal gear that is being hidden in Shadow Moses base in Alaska. The gameplay is brilliant. You sneak around, crate to crate basically, and try and not let the guards see you. You can sneak up behind them and kill them, take their weapon, and go on an all out shooting frenzy, or you can sneak around the entire game and not fire a shot (until a boss battle of course). With a few different choices on how you want to go about things, there is tons of variety to offer in the game.
Graphics:
Some of the best on the PS1. They still look good today.
Sound:
Excellent voice acting, excellent music, and excellent effect. Strong department of the game.
Replay:
Even though there really isn't much change to the game each run through, it is still great just to sit down for 3-4 hours (once you get the game down) and just just beat it.
Overall:
One of the best games to ever grace video game land, and an instant classic. Great characters, great story, great graphics, great everything. BUY!