But instead of Halo 2, it was Halo PC, and instead of a LAN party, it was online, and instead of invitation-only, it was J.R.-only. It was great fun, man. Rockets and grenades only. Then sniper rifles and pistols and grenades only. Then shotguns and grenades only. Spamming grenades has never been so much fun! I think the large number of players and the small maps made them awesome.
Also, check this out:

ALMOST! So damn close! Gahhh! That was sniper rifles, pistols, and grenades in Blood Gulch, btw.