A Claude Code skill that ships, tested across four games
·16 mins
How do you build a skill that actually ships? How do you build a test loop that closes? What does an agent decide on your behalf when the spec stays silent? Adapting board games on Board Game Arena gave me a case study — bounded scope, constrained framework, instant validation. One example: April 10, 2026, with the help of this skill, I let Claude start from a game’s rules (Quantum Tic-Tac-Toe) and reach a complete game in under three hours, without writing a single line of code by hand. Four games later, here’s what I took away.