There was a PvE ARPG dungeon crawler inside DotA calle Aghanims labyrinth which was essentially a custom game which valve made as part of its pre-International battle pass. Absolute blast. Now, they won't release it as a custom game and they won't release it as a standalone game and absolutely no one understands why. It's something that they had sitting already and they just chose to not let people play it anymore and no amount of requesting has even earned a response from Valve. I wish I had a job, not because of money or prestige, but entirely the ability to fuck around and do whatever you want