Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works
🧩

Structure Theory Verdicts Survival

Simple isn't small, solvable isn't abelian, and nilpotent isn't just solvable-with-a-different-name -- one wrong verdict ends the round.

💀 3 lifeives 🚫 no clock
▶ Log in to play

← Back to the arcade