I was quite impressed when I first saw the trailers for MGS V back a few years ago. But the last thing to just blow my mind was ES IV: Oblivion.
Before I played Oblivion the only games which I really had under my belt were GBA. PS1 and Gamecube games, so when I played Oblivion, I couldn't believe it was possible to have worlds that were so seamless and realistic. It still looks pretty decent today although the character models haven't aged well at all.












