The best game on Steam?

What defines "best game"? Sales? Metacritic Score? Playtime?

How old are you?

Bad Rats

The Best Game on steam is League of legends, of course

Idk they all kinda suck.

ofcourse bad rats. its the only game worth to pick up in steam summer sale.

That's a stupid, subjective question.
I'll answer you that if you answer me what's the best food in the world?
Or what is the best element of nature?
Or even what is the best type of scratching your ass?

id say Skyrim or L4D2 if you go by which one people play most then according to this it would be Dota 2
http://steamcharts.com/

Super Mario Kart: The Rise of The Base God.

Personally, my best game is Dota. But everyone has their own opinion on "the best game on steam"

Dota2, kerbal space program, torchlight 2, arma3, Dwarf Fortress, dark souls 1&2, insurgency, fall out 3& new vegas, natural selection2, portal2...........