Steam's summer sale started, by the way. Time to add discount filters to the store links in the thread opener...
Steam games for Linux on sale:
>https://store.steampowered.com/search?category1=998&os=linux&specials=1
Might as well link Deck Verified and Deck Verified/Playable games too:
>https://store.steampowered.com/search?deck_compatibility=3&specials=1
>https://store.steampowered.com/search?deck_compatibility=3%2C2&specials=1
GOG's summer sale also started (over a week ago but it's still going):
>https://www.gog.com/en/games?systems=linux&discounted=true
Meanwhile, neither Itch.io nor Humble seems to be having a formal "summer sale" at the moment, but searching for discounted Linux games still gets some results on each:
>https://itch.io/games/on-sale/platform-linux
>https://www.humblebundle.com/store/search?filter=onsale&platform=linux&drm=download
What other stores do we track in the opening post?
>Zoom Platform
>Game Jolt
Oh yeah, these fuckers almost never have sales. I'll include the search links anyway in case this changes while the thread is alive, but these are returning zero results right now:
>https://www.zoom-platform.com/sale/any/any/any/any/any/linux/any/any
>https://gamejolt.com/games?price=sale&os=linux