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!
Scavenger - An augmented reality scavenger hunt for cash prizes
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!
Gift Hunt for WordPress - Online treasure hunt on your WordPress site
Kinguin - Marketplace to buy/sell game keys for a myriad of platforms including: Battle.
Emoji Scavenger Hunt with Google - Use Google's neural networks to guess emojis IRL 🔍