Pokémon Card Grading Game: Run Your Own Grading Service
Holobrook's grading game puts you behind the desk of your own card grading service. Real Pokémon cards arrive with hidden flaws. You inspect each one with a ruler, a magnifier and a lamp, call the grade, and see how close you got. It's free and runs in your browser, with no sign-up.
How a day works
- The Daily Three: every player gets the same three cards each day. Grade them, get a grade for your day, and compare calls with friends card by card.
- Client jobs: collectors send you their own cards. Each of the 40 clients has a story that unfolds as they keep sending cards and come to trust you.
- Practice bench: unlimited cards to sharpen your eye, with no score at stake.
Find the flaws
Every card's condition is hidden and painted onto the scan: off-centering, corner whitening, edge wear, and surface scratches, scuffs, print lines, dents and bends that only show when your lamp catches them. Dust wipes off, so wipe first. After each call, every flaw is circled so each card teaches you something.
Build your service
- Reputation and ranks: from Trainee to Master Grader, with higher-tier clients sending more valuable cards as you prove your accuracy.
- Slab premium: buyers pay more for slabs from a service whose grades hold up. Overgrading feels generous, but it costs you in the market.
- Fees and the supply shop: spend what clients pay on a raking lamp, a UV lamp, sturdier slabs and new label designs.
- Factory errors: spot a rare misprint and certify it on your label. Errors never lower the grade, and they make a card worth more.
- Consistency: cards you graded before can come back unannounced. Do you give them the same grade?
Questions
Is it free? Yes. Holobrook is a free fan-made game, and the grading game is part of it.
Do I need an account? No. Your service is saved in your browser, and you can carry it to another device with a sync code.
Does it change my binder? No. The grading game is its own mode. Cards in your Holobrook binder are never shown with damage.
Is it like real grading? It follows the same four areas real graders judge: centering, corners, edges and surface, with the weakest area setting the grade. It's a game, not a grading service, and no real cards are involved.