EA’s Origin digital retail platform is continuing to grow its publisher catalogue, with Sega, Rebellion, Kalypso and Team 17 joining the roster of companies that are selling their games through Origin.

Total War: Shogun II – Fall of the Samurai will be Sega’s first game to be sold on Origin, and pre-orders are now available.

The recent additions bring the the total number of publishers on the platform to 35.

“By partnering with publishers like SEGA, we’re able to bring even more of the industry’s best games to players on Origin,” commented EA exec Craig Rechenmacher.

“With 11 million registered users around the world, Origin is fast becoming the destination for consumers looking for fresh new content to play with their friends.”

Let’s not forget that while 11 million registered users may sound impressive, EA’s big titles of late (Battlefield 3, Mass Effect 3) require an Origin registration in order to play.

EA launched Origin in June 2011 with hopes to compete against Valve’s Steam platform, which accounts for the majority of global digital PC games sales.

Are you using Origin to buy games? Let us know your thoughts on Origin in the comments below and on the MyGaming forum.