1. Star Wars Empire at War is the original game by LucasArts, which you need to play the mod Stargate Empire at War. You need also the official patch 1.05 for playing the mod. Then you have to download the Version 1.1 and the patch 1.2.
2. TPC - The Pegasus Chronicles are the newest mod for FOC (Forces of Corruption, the addon of EAW) and is still in development. SG EAW is only for the normal game Star Wars Empire at War.
EDIT: McKay was faster.^^
Texter und Planet Coder (GE) der SGMG
Berater und Co-Autor von Stargate Dark Jump
Korrekturleser für Fan Fictions