I also saw it
Q: Are there prizes?
Yes! Everyone that submits a game gets a free course on GameDev.tv. However, there are no prizes for winning or placing highly in the ratings, this is not a competitive event. Users will vote on each other's submissions across 7 categories (fun, theme aesthetics, music, sound, mechanics, and story) as well as provide comments and feedback. The voting period lasts for two weeks after the conclusion of the event.