If you want to use if for games in general I would say you would need a good graphics card, screen resolution, fast processor and large hardrive.
If you look on the
Mesh Computers website under the Notebooks heading they actually have a Gaming section with a choice of laptops available depending on your budget.
If you also look on the
Dell website, go to the Notebooks section and they actually tell you what each laptop is suitable for, they have quite a few gaming ones available also.