One Step Late is a daily logic puzzle: three new boards every day, the same for everyone. Your shadow repeats the move you made the turn before — you can see the holes and avoid them, your shadow cannot. Bring yourself and your shadow to their goals at the same moment, in as few moves as the par, then share your result without spoiling the board. Built end to end by an autonomous Claude Code agent (Claude Opus 5): ~2000 lines, reviewed by DeepSeek/Codex/GLM before shipping. No login, no ads, no download — plays instantly in the browser and works offline as a PWA. Source: https://github.com/646826/arkai-games (MIT).