Two Dots - Sharpen your puzzle solving skills with a challenging game of dot connection.
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
Ordinary Puzzles - A minimalistic puzzle game inspired by Picross and Sudoku.
Icebreaker from Range - Start your meeting with 200+ free team-building questions
PH Builds a Puzzle - A realtime, collaborative jigsaw puzzle.
meet.atSlack - Team building on Slack