A single player and co-op mod for Battlefield 2. AIX development concentrates on the single player experience and probably has the best AI support out there. AIX also covers Coop and MP, and has it's own custom vehicles. Click here for their ModDB site.
UPDATE: Get the AIX/TNG 2.0 reworked here (ModDB). All AIX/TNG 2.0 maps reworked with resupply and pickup weapons.