Claude Code just crossed 29M daily installs but most developers are using maybe 20% of what it can do. I built an interactive game covering: hooks, subagents, MCP servers, CLAUDE.md, slash commands and more. 6 rounds. 15 challenges. 5 different formats including a timed speed round. You get a spider-web radar chart across 7 skill areas and an archetype title based on your score. Some surprises: features most daily users had no idea existed. Free. No login.