I agree with Kasic with number '6' people just rate 10 left right and center
Or they aren't good at the game, get mad at it and give it a .5/10, dropping the game's true rating.
Or they don't like that type of game, play it anyways, and have a bad opinion of it simply because of the game genre and give it a rating worse than for what it is.
Or they play the game for 1 minute, get bored of the tutorial, and give it a low rating for that.
Or they just spam rate for AP.
Personally i've never rated a 10.
I have given about 13-14 games a 10/10 because they were well done, entertaining, had no issues with the actual gameplay, kept me hooked until the very end, were challenging (or had the ability to be so w/ difficulty settings) and left me feeling that the game was complete.
On the flip side, I've given about 4-5 games a .5/10 because they were either obvious rip offs of something, advertisement games, or were unable to be played due to some reason.
Raze 2..
Just another platform shooter really. It's well done, but nothing special.
The Last Stand: Union City
A unique type of zombie game, I gave it a 9.5/10 if I remember right. My only issue with it was that it's insanely easy even on the hardest mode (I played through it the first time on the hardest mode and had no trouble at all beating it) and there were a few issues with it, like when you get another partner when you already have one they disappear instead of you having two, and that the ending was pathetic.
The Last Castle
I don't see what's so special about this game either. Most of the Live games are not all that great, and this one is no different.
I don't think I gave any of the live games more than an 8/10, either because they're unbalanced, unfair, or just trying to grab money through premium stuff.