Why community feedback matters
Master sets are complicated. Serious collectors count variants differently — promos, reverse holos, stamped/graded-only prints, regional exclusives — and there’s no single official source that settles every edge case. MasterSet.io tries to make its rules transparent (see Methodology) rather than pretend there’s one universal answer. Corrections from collectors who actually own and study these sets are how the checklists get more trustworthy over time.
Contributor credit
If you submit a correction we use, you can optionally be credited — it's entirely up to you. Credit is never required to submit, we never publish email addresses, and public credit only ever shows the name, handle, or channel name you choose to give us.
What happens after you submit
- 1. We review the submission.
- 2. We verify it against available data/sources.
- 3. We update the checklist if needed.
- 4. If you opted into credit, we may list you as a contributor or mention the correction in a changelog.
Creator collaboration
Do you make Pokémon TCG master set, binder, checklist, or collection content? We’re looking for creators and serious collectors to help review MasterSet.io’s checklists before promoting the site more broadly.
- • Review a master set checklist
- • Help validate expansion/variant counts
- • Create a video using MasterSet.io
- • Build a creator-specific checklist page
- • Contribute corrections and get credited
- • Collaborate on educational content about what counts in a master set
Email nick@masterset.io directly, or use the form above (choose whichever option fits) so it's tracked either way.