Tron is a bizarrely long-lived franchise for its humble beginnings. The original 1982 movie earned praise for its groundbreaking visual effects and mixed reactions for its story. The 2010 follow-up delivered a similarly iffy narrative wrapped in glorious imagery and a stellar soundtrack. Disney played with the idea of a third entry for a decade before scrapping it and staging a reboot. Tron: Ares will eschew the Grid that held the first two outings, raising suspicion among weary devotees.