https://wccftech.com/project-stream-testers-free-odyssey/

Project Stream, Google’s technical test for their ambitious cloud streaming technology for games, gave testers the opportunity to play Assassin’s Creed Odyssey for free during the course of the test.

However, they’d be eventually left without the game itself upon the test’s closure. Today, though, Ubisoft announced that they will be eligible for a free UPlay PC copy of the game where they can continue their adventure in ancient Greece.