Fallout is a 1997 role-playing video game developed and published by Interplay Productions, set in a mid-22nd century post-apocalyptic and retro-futuristic world, decades after a global nuclear war lead by the United States and China. From Wikipedia
Rebecca Heineman reveals she preserved the original Fallout source code despite Interplay's orders to destroy it, now stored securely on M-Disc Blu-Rays.
