The 6th gen is the 128-bit era, this is the time of the ps2, xbox, game cube and sega dreamcast, there was apperintly another console called the XaviXPort but i never heard of it. This era ended arounf 2005 when the xbox 360 came out.
The multiplayer mode for MGS3. No idea if the servers are still online though.
metal gear online 2 (this is mg online 1) looks about the same but ofcourse better graphics. its fun, play it wile you can before the servers go down.
i always wanted this game.