Social Games in Slack - Polly brings your WFH team together with interactive games
Learn JavaScript - Learn JavaScript with guided tests and flashcards
Flinkit! - Web-hosted team building games for small and large companies
JavaScript.com - A free resource for learning and developing in JavaScript
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
The Ultimate SaaS Quiz - Challenge your friends and improve your SaaS knowledge