An absolute marvel of a video game. Kojima's magnum opus, and my personal favorite of the bunch, 2nd only to V. Movement which at first was awkward, but once I adjusted to it, I can't really go back to any other MGS game, let alone a 3rd person one.
It may lack the story depth that MGS2 has, but imo, it's WAY less long-winded than SoL. Its pacing is next-level.

Play this game (after MGS1&2). Essential for any gamer.