I'm blatantly stealing this from reddit but I'd love to know what free PC games OzBargainers are playing/have played.
A few of the suggestions given on reddit were multiplayer/MMORPGs, so if any free game already has an OzBargain community that'd be awesome.
EDIT Thought I'd put together a list of recommendations, excluding the emulators and low cost content.
EDIT2 Added a few more games to the list - I don't think there's any need for me to buy games for at least a decade based on these suggestions!
* 0ad
* Achievement Unlocked series
* Alien Swarm
* An Untitled Story
* Another Metroid 2 Remake
* Anchorhead
* Ancient Domains of Mystery
* Ben There Dan That
* Beneath a Steel Sky
* Blade and Soul
* Cardhunter
* C&C Red Alert 2 Yuri's Revenge/OpenRA/Other C&C games
* Cave Story
* Cry Of Fear
* Dota 2
* Dungeon Crawl Stone Soup
* Dwarf Fortress
* Escape From The Underworld
* EVE Online
* FlightGear
* Forza Motorsport 6 Apex
* FreeCiv
* GTA 1/2
* Guild Wars 2
* Haven and Hearth
* Hearthstone
* Heroes and Generals
* Heroes of Might & Magic III - this doesn't appear to be a free game (though it's inexpensive and great nonetheless)
* Heroes of the Storms
* Ikachan
* La-Mulana
* League of Legends
* Legend of Princess
* Llamatron
* Mabinogi
* Marvel Heroes
* Mech Warrior Online
* N
* Neopets
* Nethack
* Orbiter
* Out of Order
* Paladins
* Path of Exile
* Planetside 2
* Pokemon Trading Card Game Online
* Pokemon Uranium
* Portal
* Powder Toy
* Ragnarok Online
* Rogue legacy
* Runescape
* Scorched Earth
* Seiklus
* Shrapnel
* Smite
* Spelunky
* Starcraft 2 (custom arcade games)
* Super Crate Box
* Team Fortress 2
* Tera Online
* Tibia
* Total Annihilation
* Tower Of Heaven
* Vespers
* Warframe
* World of Tanks
* World of Warships
It was - look two comments above ;) HotS is a great, accessible MOBA. The lack of items makes it much easier to pick up IMO.