Actually, instead of giving you a specific game, why don't you try reviewing the newest games on the home page. Why?
-People haven't tried it and maybe they would want to know if the game is good or not.
-Chances are, you might be the first to review it, or one of the first. People searching for a review on google will find you, more readers.
-New games have no reviews yet
-Old games probably have reviews already
-People looking for reviews on old games probably won't read yours because from what I can see, your site is new so popularity isn't at a high yet. Site popularity can be seen as credible places to read things sometimes.
Just that.
But if you wanted to review an old game anyway, I would suggest the Deep Sleep trilogy by scriptwelder
Deep Sleep: http://armorgames.com/play/13979/deep-sleep
Deeper Sleep: http://armorgames.com/play/15698/deeper-sleep
Deepest Sleep: http://armorgames.com/play/16018/the-deepest-sleep