Let me put it this way, if you really like the logo, the chassis design and the glowing lights then it's a good entry level gaming laptop that's only 14". If you're not particularly attached to the Alienware logo and lights, there are better options out there available for the same price.
As far as playing specific games, the 14" laptops will not run modern games on ultra at native resolution. If you are to turn down the resolution a bit and downgrade to say high details with no AA, then it should run good.