Here : https://t.co/KBr8PXmvg5

Outlast Deluxe Edition is free on Humble Bundle
There you go, boys.
https://www.humblebundle.com/store/outlast-deluxe?partner=mamilosclub

Hey, thanks!

@ BcY: Thanks...

It's me again.

Get Fallout FREE on Steam until Saturday at 11:59PM Pacific Time!
http://store.steampowered.com/app/38400/Fallout_A_Post_Nuclear_Role_Playing_Game/

@ BcY: Thanks !

Here's a website that keeps track of games that are free for a while.

https://grabfreegames.com/

It's a good idea to check it everyday.

And that my friend is why Steam rocks... its literally free advertising for the game. More people see it, almost no sales are lost... its a win all around.

Thats the good thing about game distribution being almost 100% free.

Sid Meier's Civilization III: Complete, free for 2 days.

https://www.humblebundle.com/store/sid-meiers-civilization-iii-complete

Payday 2

http://store.steampowered.com/app/218620/PAYDAY_2/

@ Promaster: It's temporarily free to play, but it looks like you don't own it permanently. It's like the free weekend thing, but for a whole week. This thread is for games which are temporarily free and stay on your account forever.

My bad, didn't check on that one

polish_giveaway_pack

Gayos Stronghold Giveaway

@ Marcell: not for Steam though

This thread is not about Steam, hope you know that.

https://www.humblebundle.com/store/guns-of-icarus-online?hmb_source=gunsoficarusonline_freegame&hmb_medium=banner

Mysterium: A Psychic Clue Game
(only a limited amount of keys available)

https://account.asmodee.net/en/redeem/essen2017

NOTE: this site doesnt work if you have adblock enabled, however if you disable it it will show some pop ups. just disable it until you get the game (turn off the popups if they appear) (follow the tutorial)

There are Planets Under Attack and World War 3 - Black Gold Keys

- Go to the giveaway page:
https://www.dlh.net/en/steam-keys.html
- Login with Facebook (Just click it, click ok, and click it again if it doesnt log you in the first time)
- On top, Hover over your name and click Steam keys (or click on the link above) 
- Click on The button udner the Planets under attack (idk how they check, but you need to like the facebook page)
- Click Get your steam key here
- Click on the the square with correct size and color (this step doesnt work if you have adblock on)

Dont forget to activate your adblock again If you are using it

If there are no keys left, just wait a little, they will restock

Watch_Dogs on Ubisoft free (to be added to Library) for limited time!

https://freetrial.ubisoft.com/promotions/watch-dogs-1/8/

@ Marcell: thanks :p