I was able pull together a Halo 3 LAN party last year, although the "consoles" were Linux PCs and the game was the MCC edition (60fps instead 30). Split-screen was resurrected via mods. I bought some Microsoft gamepad receiver to bring Xbox 360 original controllers under Linux. Some people insisted they get to play on the original gamepad (otherwise it was a mixed bag of PlayStation and newer Xbox/PC controllers). I also realized that Halo 3 itself would have been old enough to drink with us!