Valve used The International to reveal a brand new card-based game, Artifact, set in the Dota universe.
Artifact: The Dota Card Game is as it sounds, though not much else is known about the project as yet.
I've been working on @PlayArtifact at Valve for a while now! Can't wait for you guys to play it! :D!
— Brad Muir (@MrMooEar) August 9, 2017
— Artifact (@PlayArtifact) August 9, 2017
Also confirmed: it’s nothing to do with Half-Life 3. Sadface.
We’ll have more on Artifact as it’s known.