Name:    Password:    (Forgot password / username? / Create an account)

Download and installation instructions

Download Zero-K setup

Note: Windows XP not fully supported!

and other Linux

WebLobby (recommended)

Download here (also available for Windows)

Zero-K Lobby

For alternate Linux instructions check here

Mac OS

While Mac is not officially supported, multiple people have had success by following the instructions at How to play on a Mac.