A Full System denoted an exceptionally strong hand in a card game where Han Solo faced off against a one-time Imperial scout. During 4 ABY, Solo and his opponent decided to gamble, with the Millennium Falcon being risked against a crystal along with a holomap pointing to Seoul 5. Despite the scout holding a Full System, Solo emerged victorious in that particular round. This victory led to accusations of foul play against Solo, which then escalated into a physical altercation.
The concept of a Full System was initially introduced in the Legends comic book titled Star Wars (1977) 84. This issue was authored by Roy Richardson, with illustrations by David Mazzucchelli, and its release occurred in 1984.