The Season Pass for Star Wars Battlefront (2015) is free on Origin, PSN Store and Xbox Live until October 5th. You may need PS Plus or Xbox Live membership for the latter two, but I don't think so.

Even if you don't have the game, might be worth picking up in case you buy it later (or it's given away later).

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The Walking Dead: Season 1 was a steam key for me? Maybe it has to do with location.

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Huh, when I redeemed the free copy, it was just a download. No Steam option. But when I rechecked, it was in fact a Steam key.

Which is good since I already had the game and was grabbing the key for a friend just getting onto Steam who probably didn't want to register with Humble at this point.

Thanks for the heads up, SockmonZ.

No prob boffo97

Pshyconaughts is now free on humble bundle. it is both steam key and direct download.

Edit: for about 18 hours

Looks like SteamWorld Dig is a On the House game on Origin right now

Oddworld: Abe's Oddysee free on GOG for 48 hours.

And Oddworld: Abe's Oddysee also appears to be free on Steam through the Humble Store.

And free on Steam itself.

Outlast + Whistleblower is free on Humble Bundle. https://www.humblebundle.com/store/outlast-deluxe

Key for Outlast cause i had the game already : 2QV8Q-W0ZWM-DJRER

Kabitis is free on IndieGala https://www.indiegala.com/store?massive

Fallout: A Post Nuclear Role Playing Game, first in the series that has now generated 3 numbered sequels and Fallout: New Vegas among others) is free on Steam through tomorrow.

http://store.steampowered.com/app/38400/Fallout_A_Post_Nuclear_Role_Playing_Game/

Sid Meier's Civilization III Complete is free for the next day and change on the Humble Store: https://www.humblebundle.com/store/sid-meiers-civilization-iii-complete

What's better than one free game? Two free games!

Stronghold HD and A.D. 2044 are free on Gog.com

gah. You beat me to it every time boffo.

Watch Dogs is apparently free via Uplay right now. Don't be thrown off by the free trial thing, reportedly it's yours to keep.

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

You can claim it right now, but apparently you can't actually download and play till tomorrow.

But yeah, it's free.

The first Syberia game is free on GOG 11/9 - 11/10.

Ah, you just beat me to it :)

https://www.gog.com/game/syberia

Killer is Dead - Nightmare Edition is free on Humble Store through tomorrow: https://www.humblebundle.com/store/killer-is-dead-nightmare-edition

Plants vs. Zombies Game of the Year Edition is On The House on Origin.

Brutal Legend currently free at humble

https://www.humblebundle.com/store/brutal-legend

Brutal Legend is awesome, happy to add it to my collection again.

MDK is free on GOG for the next 48 hours: https://www.gog.com/

And StarCrawlers is "free" if you spend $15.

3 free games all within in a few days of each other. Pretty cool.

More goodies!

Sanctum 2 on Humble Bundle: https://www.humblebundle.com/store/sanctum-2?hmb_source=search_bar

Free with a caveat: The Flame in the Flood is free on Twitch if you have the Twitch Desktop App (which used to be the Curse App for those who used it to manage WoW mods) and Twitch Prime. Twitch Prime is free if you have Amazon Prime. If you don't have either Twitch Prime or Amazon Prime, not free. If you do, grab it off the Twitch Prime rewards page at the Twitch website.

On a side note to Moho, it might be worth it to add Twitch as a digital platform for PC games.

Frozen Cortex / Frozen Synapse is now on Twitch Prime.