Kaligi - Co-op puzzle game that tests loyalty and communication skill
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
Flinkit! - Web-hosted team building games for small and large companies
TeamBuddy - Team building for remote companies
Trivia for Slack - Fun team-building with 1000s of quizzes right inside Slack
Puzzleskill - Book recommendations from industry leaders