Every card game gets prototyped on printer paper in sleeves, and every designer discovers the same thing when the real cards arrive: the deck feels completely different.

Some of what matters can only be tested on the actual stock, and testing it costs less than most people assume.

What paper prototypes genuinely test

Rules, balance, iconography legibility, hand size, table footprint. All of that works fine on printer paper in sleeves, and you should iterate there for as long as possible — it is free and instant.

Do not order cards to test whether the game is fun. Order them once you already know it is.

Thing one: shuffle feel

Linen versus smooth is not a cosmetic choice, it is a handling one. Smooth cards stick together, especially when new, and a deck that is unpleasant to shuffle gets sleeved — which changes your box size and your costs.

Riffle a real deck fifty times. You will know within a minute whether the stock is right.

Thing two: opacity under real light

Hold the deck up to a bright window and a lamp. Look at the backs from a shallow angle. Any hint of the face showing through is a problem you cannot fix later.

This is why black core exists and why we will not quote thin stock for a playable game regardless of budget.

Thing three: how the artwork actually reads

Icons that are clear on a monitor at 200 percent are frequently unreadable at actual size across a table. Text set at 6pt on screen looks fine and disappears in print.

Print twelve cards, put them on a table, stand up, and look down at them from normal playing distance. That single test changes more card layouts than any amount of on-screen review.

Order small, order real

Our minimum is twelve cards precisely so this is affordable. A prototype run on production stock, with the real finish and the real cut, tells you everything a paper mock-up cannot.

Iterate once or twice there before committing to thousands. It is far cheaper than discovering the problem in a fulfilment warehouse.

Then think about the box

Deck thickness changes with card count and stock weight, and a tuck box has to fit snugly or it will not stay shut. Give us the final card count before we tool the box rather than after.

If the deck will be sleeved in play, say so — sleeved decks need a noticeably larger box and that decision cascades into shipping cost.