Whats The Best Free Game Ever?

Anyone know of some that aren't multiplayer? I mean, I know its an old timey thing to actually play a game with a decent story, but I'm just curious.

TF2 is awfull, most of the people that bought the game stopped playing, including me, most of the people that keep playing it are those that didn't pay any money for it. When they started adding community made weapons with stats the game went into the crapper.
On topic: Blacklight Retribution

Alien Swarm.

if u like dota - League of legends
Aion , Lineage 2 - RPG's
Trackmania nations forever (awesome :D)
well there are more but this is what came up :)

Stick & Stone.... that was a fun game back then （｀ー´）

Dwarf Fortress, Brogue, Spelunky, Blacklight: Retribution, Soldat, Enemy Territory.

Beneath a Steel Sky is a great game

Treasure Adventure Game is awesome. Also King Arthur's Gold if you liked Terraria.

dota 2

DAGGERFALL

Dota 2.

Arma 2 Operation Arrowhead, Mod DayZ :) Great.

Blacklight Retribution. COD 3 for free. Even better.

I am surprised noone mentioned Runescape.

Alien Swarm for me.

Hydorah.

I will go with League of Legends

MAGICKA!

BF:heroes

Cave Story! Seriously... EVERYONE should play it at least once. ^-^
Some other good ones are TF2, Blacklight, Tribes, Vindictus, LOL, CatPoke xD

TEAM FORTRESS 2<<<

Warface!

mmorpg : maplestory

fps: counter strike online, combat arms, blacklight retribution

Skyrim

Blacklight Retribution :)