Due to the backlash and the aging of the original DRM technology, modern versions of the game are now "serial number free."
: The serial numbers were printed in a font where characters like "0" and "O," or "1" and "I," were virtually indistinguishable, leading to frequent activation failures. bioshock - Serial Numbers Free
: The game has frequently been offered for free on services like Amazon Prime Gaming and the Epic Games Store, which provide modern, DRM-free licenses directly to user accounts. In-Game "Serial Numbers" (Door Codes) Bioshock activation woes - Games - Quarter To Three Forums Due to the backlash and the aging of