QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Tango Card - Tango Card bundles an awesome catalog of e-gift cards and other e-rewards with easy-to-use technology and expert program support.
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.
Giftbit - Buy, send and track digital gift cards for your reward and incentive programs.
Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.
Rybbon - Send digital e-gift cards as marketing incentives or rewards with Rybbon, which integrates with Marketo, HubSpot, SurveyMonkey, and Qualtrics.