well i know im going to get smack around for saying this but Halo 1 and only 1 when it first came out had the best times in any video game to date multiplayer lan parties through xbconnect with my cousins against alot of people before xbox live started and talking about single player best AI when it first came out was very fun to play many times but what made it hot was the co op mode good times good times and yes i play unreal tournament and half life but i was always alone with those games and just playing online wasnt the same as halo on xbconnect so yea the original game only.