Thea 2: The Shattering is free at GOG.com for the next, I dunno, day and a half? Scroll down the main page and look for the horizontal banner. You have to sign up for their emails, but you can just turn that off afterwards.
Total War: Warhammer 1 is now free on Epic.
There are a several Free DLCs in there as well (not sure if they're significant), check the More packages thing.
I'm not sure sitting round a PC is the ideal scenario for Riverbond. Enjoyed playing it on Xbox with my daughter though. It's arguably made redundant by Minecraft Dungeons being a better Diablo lite.
Minecraft doesn't let you play as a piece of bacon, so there that!