1B3D is a Minecraft anarchy server running on Beta 1.7.3.
To join, select old_beta b1.7.3 in your launcher.
Play without: World resets, admin interference, rules.
Apart from building lag machines or otherwise attempting to harm the server's integrity, there are no rules or restrictions.
Cheating is allowed, though the server will try to prevent you from using some cheats like fly for example.