Skills have become one of the most used extension points in Claude Code. They're flexible, easy to make, and simple to distribute. But this flexibility also makes it hard to know what works best. What type of skills are worth making? What's the secret to writing a good skill? When do you share them with others?

Race Into Space — the open-source version of Buzz Aldrin's Race into Space (based on the Liftoff! board game by Fritz Bronner). Originally published by Interplay in 1993, open-sourced in 2005, still actively maintained.