There is https://en.wikipedia.org/wiki/List_of_alternate_reality_games https://en.wikipedia.org/wiki/List_of_alternate_reality_game... but they look like they'r

There is https://en.wikipedia.org/wiki/List_of_alternate_reality_games https://en.wikipedia.org/wiki/List_of_alternate_reality_game... but they look like they're all complete except one where the "prizes" are just clues about an upcoming game release.