Hello there, you awesome person, you! 
Star Wars Battlefront II: Celebration Edition is free to own forever. As long as you claim a copy before the 21st January at 16:00 GMT.
Game Description:
Put your mastery of the blaster, lightsaber, and the Force to the test online and offline in STAR WARS⢠Battlefront⢠II: Celebration Edition.
Be the hero in the ultimate STAR WARS⢠battle fantasy with STAR WARS⢠Battlefront⢠II: Celebration Edition! Get STAR WARS Battlefront II and the complete collection of customization content acquirable through in-game purchase from launch up to â and including â items inspired by STAR WARSâ˘: THE RISE OF SKYWALKERâ˘.
Enjoy!