Here is a list of the most played freegames on Steam… in the top 100 played games. January 2014. There are 87 freegames on Steam, 13 not listed and 52 more are in the process of being published on Steam.

1 – DOTA 2
2 – Team Fortress 2
3 – Warframe
4 – Path of Exile
5 – Neverwinter
6 – War Thunder
7 – PlanetSide 2
8 – RIFT
9 – Stronghold Kingdoms
10 – APB Reloaded
11 – Marvel Heroes
12 – Star Trek Online
13 – No More Room in Hell
14 – Marvel Puzzle Quest: Dark Reign
15 – The Lord of the Rings Online
16 – DC Universe Online

There are 79 freegames on Steam!

Link to Official Steam F2P Library

The games reach 87 if you search through the store..

Link to Freegames via Store Search

There are 52 freegames approved on Steam GreenLight!

Link to Approved FreeGames on Steam GL

Also check out this list, you will find freegames that are not listed when you search for freegames on Steam.. (like for example Alien Swarm, Cry for Fear, Trackmania Nations Forever and others)

13 more freegames not listed or with wrong category…

Link to Not listed Free Games on Steam (warning the install links in this list will add immediatly the game to your Steam Library if your Steam Client is open)

That’s make about (87 + 52 + 13) 152 (if all the approved game will be published and all the games are still working) free games! Not bad Steam!

Last but not least check out also THIS LIST made by a Steam User… (warning the install links in this list will add immediatly the game to your Steam Library if your Steam Client is open)