The collection was released in July of 2008 along with the Star Wars: The Clone Wars line in the fourth "midnight madness" event.
The figures included a "Build-A-Droid" system, in which each figure features a piece to collect and create a unique astromech droid or protocol droid. The concept was launched at the end of the 30th Anniversary Collection with a series of Wal-Mart exclusive two packs called "Droid Factory" where pieces from all six packs combined to build C-3PX. One of those packs included the first original Marvel Comics Star Wars series character released as a toy, K-3PX. (Droid Factory was later revived as a separate toy line by Disney Parks.) Comic Packs featuring Marvel series characters Fenn Shysa and Tobbi Dala soon followed. This trend continued in 2009 with the release of Lumiya in a comic pack and her alter ego Shira Brie in an Evolutions set. 2009 also saw the release of the first action figures representing Jacen and Jaina Solo, the children of Han Solo and Princess Leia as seen in various Star Wars novels. They have even released an action figure depicting Plo Koon, with a removable Antiox breath mask and lightsaber gauntlet.
The packaging for the basic figures featured a stormtrooper helmet, contrasting with the clone trooper helmet of the The Clone Wars line. The series included special "First Day of Issue" packaging for figures manufactured on the first day of production. "The Saga Legends" line continued as well, now focusing on kid friendly primary characters and so called "troop builder" characters such as clone troopers or battle droids. In 2009, the packaging for the basic figures of the collection shifted away from blue and white stormtrooper helmet theme to a red and white packaging with a simple Star Wars logo and a large character portrait.