Steam

You can use SteamDB to sort by discount or price: https://steamdb.info/sales/

I finally bought Grim Dawn. The core game has a 90% discount.

I already have them all, but the Arkham games are like $3-4 each right now. If you don't have them or haven't played them, that's an absolute steal for one of the best game series ever made.

It's sad how dead the Steam Season sales are these days.. it's always the same shit indie games and over priced tripple A games. It's either "Here! It's a bag of garbage for €12" or "we knocked ¢00.15 off this €80 Euro cash grab!"