Although I played Multiplayer in Goldeneye 007 back in the day, it wasn't until XBL & HALO 2 where I really started to like MP. And that was because it had a Party System & Matchmaking so I could enjoy matches WITH my friends on MY team. Once the 360 hit,
I started playing a lot more games Multiplayer, but every few years there is always 1 that I focus on.
I'm more interested in Co-op games w/ friends, but most of the time those are limited to 4 players only, so I can only play with 3 friends. Multiplayer games that I can get more than 3 friends in are quite fun.