Deadlock – a game which is yet to actually be announced in any official way, shape or form – had a concurrent player peak of over 16,000 this weekend.
At the time of writing, the game’s peak is sitting at 16,947 players on Steam, with 4,714 people playing it at this very moment in time.
I tried to install it myself via a little tab on SteamDB just now, but was met with the message: “An error occurred while launching this game: Game configuration unavailable.” I was then taken back to the Steam app’s main page.