The Best three games what have you won here

The only games I've won are my top 3 ;D

Warhammer® 40,000™: Dawn of War® II
100% Orange Juice
X-COM: Terror From the Deep

Thats it.

The Fallout Collection (1, 2, and Tactics), which is quite frankly hard to beat by any standard.
Space Rangers
Ticket to Ride (more because it got me to understand the board game better, which is a load of fun to play with friends)

RACE Injection, Napoleon: Total War Collection and Victoria 2 :)

Haven't played all of them yet, but from the ones I played:

1. Cognition: An Erica Reed Thriller (Which became one of my favorite modern point&click games. It's really really good)
2. Tesla Effect: A Tex Murphy Adventure
3. Tropico 4

The list might change after I play - Universe Sandbox ², Blackguards Deluxe Edition and Company of Heroes
But I'm pretty sure Cognition is gonna stay my number 1

STAR WARS™ Jedi Knight II - Jedi Outcast™ (1,447 entries, Level 0 public GA)
LEGO® The Hobbit™ (25 entries, puzzle-protected invite-only GA)
The Incredible Adventures of Van Helsing II (2,152 entries, Level 1 public GA)
Honorable mention: Demonicon (500 entries, Level 1 public GA)

The Witcher 3: Wild Hunt
Borderlands: Game of the Year
King Arthur and King Arthur II Collection

I consider myself as a very lucy steamgifter. :)

Disney•Pixar Cars Toon: Mater's Tall Tales
Bad Rats: the Rats' Revenge and
Moonbase 332

Possibly the best games in my collection too.

Mass Effect 2
L.A. Noire
Amnesia Collection.

1.BioShock Infinite
2.BioShock
3.Outland

1 - Warhammer® 40,000: Dawn of War® - Game of the Year
2 - Guncraft
3 - Dust: An Elysian Tail

BioShock triple pack, it was mt first win and it was before BioShock was bundled.

The Darkness II
Shadowrun Returns
The Witcher: Enhanced Edition Director's Cut

Best as in our own subjective opinion? Or as in most expensive?

I'll do opinion.

Talos Principle. Great puzzles, cliched but rewarding story.
Naissance. No idea what is going on, but it's pretty.
RTW Collection. Couldn't find my discs, so now I have a game I play forever and ever on Steam so I can copy it out and do individual mod setups all day long.

Freedom Planet
Coin Crypt
Bioshock Infinite

Spec Ops: The Line
Mass Effect 2
Of Orcs And Men
Dead Space
BioShock™
Mirror's Edge™
Chivalry: Medieval Warfare
Sanctum 2 Complete Pack

Not the best, but i love these games! :D

Brothers - Tale of Two Sons
Blackguards
Gauntlet

I cant chose top 3, there is a lot of awesome games :)

Daedalic Adventure Bundle (yeah I know it's a bundle with multiple games but who cares :P)
Hitman Absolution
DeadCore

I didnt even have 3 games won.. I have just 2... Im so unlucky..

witcher 3
metro redux bundle (gifted personally <3 )
mecorx

Game of Thrones - A Telltale Games Series
Limbo
Bad Rats ( ͡° ͜ʖ ͡°) JK, Magicka

BioShock Infinite
S.T.A.L.K.E.R.: Shadow of Chernobyl
Life Is Strange Complete Season (Episodes 1-5)

Among the Sleep, The Room and Flower Shop: Summer In Fairbrook.

Simply because I liked these most when playing them.