Social Games in Slack - Polly brings your WFH team together with interactive games
brandquiz - Build beautiful, fully customizable quizzes, surveys & more
Flinkit! - Web-hosted team building games for small and large companies
DOOZY - The social space for virtual teams
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
Qzzr - Qzzr is an online quiz tool that allows you to quickly create quizzes, post them anywhere on the web and track results.