Primary-source rule
Trust the official license PDF over any blog summary—including ours.
Powered-by / third-party literacy
Compatibility talk without inventing a license for you
Powered by Zweihander is for creators and curious GMs who need high-level literacy about third-party and “powered-by” style publishing around grimdark d100 games: what a compatibility mark usually signals, why primary license PDFs beat summaries, and how trademark talk differs from permission. We teach literacy. We do not invent licenses, seals, royalty schedules, or partnership claims.
Start with Getting Started, skim the Guides hub, or browse Resources when you need outbound references like Zweihänder Wikipedia.
What this desk is for
Third-party work stalls when people confuse a fan pack with a commercial grant, or paste a logo without reading the current program terms. We write plain habits for those traps.
Prefer primary publisher license pages and public legal literacy over anonymous “you can publish anything” threads. Useful orientation: trademark basics, copyright overview, and Zweihänder on Wikipedia for lineage—not for permission.
If a cite is fuzzy, stop and find the official program text. Speed-running compatibility is how creators and publishers both get burned.
Guides, Glossary, and Resources go deeper. Sibling domains cover table reference, community norms, edition migration, and channel literacy when your question is not about publishing compatibility.
How we write
Date which program text you checked and when. Co-authors need a trail, not a vibe. We are not your lawyer.
Marketplace blogs show publishing trends; they are not counsel. Email info@poweredbyzweihander.com for corrections to our pages; see Contact and About.
Need a human? Email info@poweredbyzweihander.com. Also see Contact and About.
Related desks in this neighborhood
Play and community siblings (.cc, .org, crate, reforged, store) cover table practice beyond licensing.