Knowledge of English at Upper-Intermediate level or higher, because English is the language we most often use for communicating with clients.
It's also awesome if you keep up with the gaming industry, whether you actively play or are just enthusiastic about games. So, for example, you can tell the difference between an MMORPG and a Hidden Object game.
Experience working with top executives and presenting or pitching. We often exhibit at gaming conferences and meet with potential clients there, and this is where your skills will be exceptionally useful.
Case examples where you expanded your client base at a previous job. We want to increase our overall sales expertise, and your experience will be very valuable.