There's no "play-through" first of all. Second, you know what a game is going to be like within the first 5 seconds of playing. You know the basics of PacMan, Pong and Mario Bros in that time frame. Minimalist "Energy MMOs" are so easy to spot that anyone can give it a poor rating in the same time frame.
Good idea, would perhaps stop a lot of players from adding the game, selecting a character and then giving a bad rating / comment without really giving it a real try/playthrough.
Oh boy, another "MMORPG" without any battle animations. Hello? The fun in zombie games is seeing zombies being splattered around. Not this fly-by-night "give us kreds" scheme junk.
Dat awesome 3D graphics.