Circadence Security gamified learning cybersecurity. They are wildly successful and fun to boot.
They had a simple ask - to generate a in-game chat experience that allowed for team communications, one-on-one secret messages, and team leader-to-teammate conversations.
Using simple research of game chat spaces, client services like Slack, allowed us to very quickly pencil sketch and implement into code directly.
It was a small, quick, really fun project. And now, I actually have a friend from Sphero working for them full time!