I bought https://store.steampowered.com/app/1042550/Digimon_Story_Cyber_Sleuth_Complete_Edition/
As this is the best deal it has had so far, in my country, our currency is weak so comparing it to USD even with the big discount it had on Humble Bundle along with the additional subscriber discount it costed more than what it does now on Steam for me.

I would maybe buy PUBG if it was for sale for over 50% off. But it is not, so...

https://store.steampowered.com/app/631900/Airtone/
-60% historical low

Vavle doesn't choose what games get a discount they just set up an event and ask publishers if they want to participate.

lol ''golden week'' is japanese thing,' funny' part is, many [most] of those sales are not availaable in japan...