For the GTA one, it looks great - the only thing I dislike is the font you chose. I believe there were many other suitable font options that could help out. 6/10

HL2 Concepts look pretty good, but it seems just as if you took the normal concept art and just pasted a few of them on - you can do better man! 5/10

The Doom III One is my favorite, although the color of the font you used has way too much contrast. 7/10