Image Credits to dutchtechnerd
There is a range of different styles of computer desks available from cheap, basic desks, to L shaped computer desk, desks suited for left handed people, corner desks, and even feature rich desks specifically designed for gamers with cool designs to match. Then there's the size of your desk. You should measure the space where you want to put your gaming desk, so you know what to look for when shopping online or at your local store.
Also keep in mind the storage capabilities of your computer gaming desk. You want to be able to fit your PC tower somewhere that allows it room to breathe to not restrict cooling (and avoid putting it on the floor; especially if you have carpet). You also want ample space for all your additional components to sit such as your peripherals, receivers/base stations for any wireless devices, streaming mic, and think ahead if you have any extra-large accessories such as extended-sized mouse pad.
Image credits to dutchtechnerd
Some computer gaming desks will have nice additional features such as DVD/CD racks,
special cabinets, sliding keyboard tray, and monitor platform. The keyboard/mouse tray can be handy to ensure your arms and hands are in a comfortable and safe position when gaming, and same thing with the monitor stand to allow you to view your screen at eye-level. Don't underestimate the important of ergonomics.