SP is awesome. I dunno why, but I get goosebumps. It's not even scary or w/e, I just get too into it for some reason..I dunno why. It can get creepy and shit...and creepers jump at yah.
Single player is great. MP....not so much. You rank up, but from level 7 up u kinda start owning..so when you join as n00b u get pwned. Also, they went with Windows LIVE BS to play MP. PC gamers get but fucked again...ughh, fucking console shit. Matchmaking BS. DUMB DUMB DUMB.
Oh and the lagg can be pretty fkcn crazy....
SP rules.