[Free] Itch.io games | Multiplayer MegaClicker + 9 to 5 + Steamroll + Hard 2.0 + Number Islands

Apart from the games you can claim (which this thread mainly focus on), you need to download them before the sale ends or they will be gone, the ones you can claim will stay in your library forever. And no in general they don't provide steam keys, these are drm free downloads. Keep checking this Itch.io sales link, because new games keep added every week.

[New]
Multiplayer MegaClicker (android apk): https://itch.io/s/11143/random-sale-100-off (Offer ends in two days)
https://itch.io/s/10978/9-to-5-free-weekend (Offer ends in 2 days)
https://anticto.itch.io/steamroll (Steamroll, with claim)
https://itch.io/s/10806/free (Forever Home with claim, Offer ends in 8 days)
https://itch.io/s/11046/anniversary-giveaway (Brute With claim, Offer ends in 13 days)
https://itch.io/s/10949/100-off-sale (Number Islands, with claim)
https://itch.io/s/11099/new-update-sale (Hard 2.0, with claim)
https://itch.io/s/11051/summers-out-sale (Evangelion, with claim)

"If anyone bought/claimed RPS Runner, you might want to contact the developer in order to receive a Steam key for it."

[Old] (If something is removed, let me know and i will remove it).
https://hereingermany.itch.io/jelly-fullversion
https://manstersoft.itch.io/chimera-crusader
https://manstersoft.itch.io/fun-pak
https://manstersoft.itch.io/koala-quest
https://manstersoft.itch.io/oatboy-vs-slime-mold
https://manstersoft.itch.io/turtluv2
https://itch.io/s/8871/a-show-of-hands-is-free

http://www.opiumpulses.com/store/2014/ryan-silbermans-free-pcmobile-bundle (7 games for free, just add to cart and order).
Note how much points you have and you could buy other stuff with it for free, for example:
http://www.opiumpulses.com/store/2018/ryan-silbermans-cheesy-pcmobile-bundle 250 points (Itch.io)
http://www.opiumpulses.com/treasure/1779/mahjong-with-memes coins 99 points (Itch.io)
http://www.opiumpulses.com/treasure/1708/rebuild-the-european-union 99 points (Itch.io)
http://www.opiumpulses.com/treasure/1740/luke 99 points (Itch.io)
http://www.opiumpulses.com/treasure/1702/space-journey 395 points (Steam)
http://www.opiumpulses.com/store/837/alien-isolation-last-survivor-dlc 660 points (Steam)

Their search is flaky, and i only found them through suggestions, if you come across other worthwhile ones below 1000, let me know.
http://www.opiumpulses.com/treasure/index

There are always plenty of free games on itch.io here without claims.

Last, you can find some itch.io keys on a marvelous site, that you can keep, but can't post due rules.