If you are expert in writing reviews for any product or a particular topic then you can try to check and play the desired games, note the points and draft it accordingly. Do not post it immediately and check it thoroughly prior to publish it. Observer the game well, write catchy title, reasonable summary with good keywords, write pros and cons of the game, write history detail of the game and company name etc.
You can try to write review about desired game and publish it in "Technology Articles" section of this site for further handling by its editors. Wish you good luck.