That's correct. In 2004, LucasArts released Battlefront, which covered the Original Trilogy, Episode I, Episode II, and part of the 2D-animated 2003 "Clone Wars" microseries. Battlefront II was released the next year, which included battles from all 6 films, including the then-new Episode III. LucasArts was rumored to be working on Battlefront III for years, but it never materialized. The 2015 Battlefront is basically a re-boot that fits within the new Star Wars canon (the Expanded Universe was discontinued in 2014.) If you want to check out the 2004 Battlefront, it's available for PC on The Pirate Bay.
