I'm going to guess The Binding of Isaac: Rebirth.

Thank you for your generosity, croxxx! I'm going to make a guess as well.

Though I'm not interested in Steam for the most part, there is one game that I desire that I suspect you might have due to how frequently it has been on sale....Crusader Kings II.

The reason why I want it is because I'm a big fan of strategy games, including Paradox titles, and I also got a lot of enjoyment from the demo. While I imagine CKII will eventually come to GOG, that isn't likely to happen in the near future and I wouldn't mind having the opportunity to play the game earlier.

But wait, there's more!™

Thanks for the giveaway but NOT IN because steam burns..

That's a lot of keys! Very generous of you, thanks! I have a short steam WL(15), so it is hard to choose which one to throw a guess at from it. Hrrrmm......is there a key for Dark Souls hanging with that bunch perchance?! Why do I want to play it? It looks like a brutal, medieval, dark, fantasy that could be a lot of fun, and that appeals greatly, for some reason there is some hesitance whether I will like it or not, but of course, only way to know is to give it a try, which I really want to do!

Huh, I thought a girl would stay away from Grotesque Tactics?
Looks like I am wrong.

Not In.

+1 Nice giveaway! I don't have a high enough rep to participate but I'm really curious to know what those secret games are.

Why would we? It's satire. *scratches head*

My guess: Heretic: Shadow of the Serpent Riders ?

Fun! I'm going to guess Hitman 2: Silent Assassin.

Copy a part of the game description

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now it is on YOU, Drake, to recruit a force and fight off the Dark Church before the population learns about the defeat and runs scared. However, all the land's heroic men are deadly injured or already dead. Only the most dubious and criminal creatures are left, deeply hidden in the high security dungeons. Well... and there still are the most evil creatures of all: WOMEN!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

At any given time there may be 5-10 GAs running simultaneously. What's been amazing the past few weeks isn't the number of GAs on the board but the quality of them.

Ultimately my advice would be to just use your best judgment and seek balance. If you win 2-3, consider running one of your own before getting back in the game. Anyway...

This is a very exciting structure. One guess and one guess only, eh? Boy...that's tough. Probably safer to go for something like Risen or Puzzle Agent. But eh, I'll go for the gusto with my entry for:

Ori and the blind forest

My Guess: Rocket League though I doubt it.

cool giveaway . lets see now i think there is a key for Drakensang, its one of those rpg games on steam that rarely go on sale , many people highly recommend playing the game.

Again thanks for the giveaway very cool concept

Oooooo, fun giveaway! Thanks for your generosity, croxxx.

The game I'll guess is Call of Duty 2. I really enjoy FPS games, I've never played that one and it looks really good.