ARPAY - Buy gift cards at ar-pay.com, which allow you to access your favorite internet services: online games, e-wallets and console games, online shopping cards and many more!
Quake - Quake is a series of first-person shooter video games released by id Software.
G2A - Enjoy the vast offer of Steam, Origin, Uplay, Battle.net, GOG, PSN and XBOX CD-Keys at the most attractive prices on the market. Don’t overpay – buy cheap on G2A.COM!
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Kinguin - Marketplace to buy/sell game keys for a myriad of platforms including: Battle.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.