Just so it has more entries... [ENDED: SOLUTION POSTED]

Screenshots
GAR
(Removed the much easier method to make it a tiny bit harder). It was just a giveaway code on my first site giveaway.

BPkfM-cPGfM-cPkf0

Enjoy

I'll also mention that the game abbreviation is CoL. Just to give a bit of a hint to what people are working towards.

Feel free to discuss what the game NAME is, not how to solve.

Also, if you find the giveaway please bump the thread. Chances will be high if you get in and not a lot of others find it.

Edit: "Solutions"
Screenshots just meant look at my screenshots and the giveaway code was there (it was on my featured screenshot).
GAR is the name of one of my Steam friends and a well known SG member (his SG name is not the same).
The method I removed just said to look at an old giveaway, it was just in the first giveaway I created.

The key worked like this:

1. I placed the giveaway code in 3 sections as a Steam key.
2. In the first section I switched the first letter.
3. In the middle section I switched the middle letter.
4. In the last section I switched the last letter.

If you ordered the key one section above the other you'll notice 2 letters are the same in both (the second letter, P, and the 4th letter, f).
You can then see each of the other letters is repeated in 2 but not the 3rd. This is because of the fact that one letter was changed in each.

Combining the letters and using the one that occurs twice in the given position you get: cPkfM which was the giveaway code.