Halo Combat Evolved and Halo Custom Edition Servers are going down May 31st along with many other games.
Please help us save Halo CE, we have a huge dedicated community with custom content coming out all the time. We've managed to keep the engine alive with Custom Edition, porting Halo 2, 3, ODST, Reach and even Halo 4 content to the original BLAM engine. The community is still alive and we need your support, so please take a moment to sign the petition to get Halo CE adopted by Steam or maybe someone else so that our community doesn't die off once and for all.
https://www.change.org/petitions/steam-adopt-halo-combat-evolved-custom-edition-multiplayer