The list of co-op games available for a discount price over at Bundle Stars' Bundle Fest 4 keeps growing. Now you can pick up Ryse: Son of Rome for the PC for just $6.79. That's, like, two cups of Starbucks coffee.

Bundle Stars has kicked off it's Bundle Fest 4. Included are some fun co-op titles, complete with party packages and complete editions. Co-op games include Gauntlet, Never Alone, Dead Island, and Dead Island: Riptide.

Bundle Stars is known for their themed bundles of PC games. You can grab a boatload of titles for just a few bucks that vary depending on their theme - Action Games, Horror Games, War Games, and many others. The latest bundle is based on something near and dear to our hearts - Co-Op Games, specifically co-op indies.