Slackmojis - A directory of the best custom slack emojis
PlayPlay.io - Chess and Ping Pong tracking in Slack
My Slack Emoji - Turn your team photos into Slack emoji's
Pinpon - The ping pong bot for Slack
Emoji Engine - A search engine for emoji 🔎
Ranked.Fun - An online leaderboard with your friends for your favorite games (Ping Pong, Foosball, Smash Ultimate, Chess, etc.)