While is not officially available for free currently, there are several ways to access the game's story, files, and past promotional offers:
: Historical files, including a game demo and various game level data, are hosted on the Internet Archive for preservation purposes. Tom Clancys Splinter Cell Conviction Free
If you're looking to experience the game's story without playing, you can watch full, high-quality walkthroughs: While is not officially available for free currently,