Rollup Rae guides you through Bridge Frontier. Standing in the way: The Exploit — every mistake this lane teaches you to avoid. Rollups, bridges, alt-L1s, privacy, audits and tooling — guarding the frontier between chains.
All 90 lessons below are free, need no signup, and each one opens as a comic issue with a live try-it sandbox, a task list that pays XP, and a narrator that reads it aloud. Progress is stored in your own browser — nothing is uploaded anywhere.