Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
Pinpon - The ping pong bot for Slack
Social Games in Slack - Polly brings your WFH team together with interactive games
PlayPlay.io - Chess and Ping Pong tracking in Slack
Flinkit! - Web-hosted team building games for small and large companies
Papio - Friendly foosball scorekeeper and stats tracker for Slack