Does condition affect combat or card stats?

No official source used here links condition to HP or ATK. The store explicitly links condition to price, so any combat-stat effect should remain unconfirmed unless retail evidence shows it.

Can a foil card also be damaged?

That has not been confirmed by the sources used here. Check the individual copy in the current retail build rather than assuming foil and regular condition rules are identical.

Field guide

How Card Repair and Condition Work in KOTAMON

An evidence-backed explainer for KOTAMON card condition: crumpled, damaged, torn, repaired, and how quality affects selling value.

Updated 2026-08-25 · Evidence-backed · Spoiler-aware

Section 01

What condition means

The official Steam description says cards can be crumpled, damaged, or torn and that better-condition cards cost more. Condition is therefore a per-copy property with an explicit relationship to resale value. Public sources do not fully document every binder-counting edge case, so this guide does not assume that a damaged, repaired, swapped, or foil copy is counted identically for every achievement.

Section 02

Can you repair cards?

The retail game uses a hands-on repair process for cards assembled from damaged pieces. The official store confirms that cards can be mended, while retail players describe positioning pieces as a repeated late-game task. The exact interface is best learned from the current build because balance and convenience features may change after launch; older demo descriptions should not be treated as permanent retail rules.

Section 03

Should you repair or sell?

For a design that may be needed for a set achievement, keep one copy until the in-game binder and achievement state confirm completion. For duplicates, compare the displayed sale value before and after repair with the time the repair takes. The store confirms that condition affects price, but it does not publish a universal repair-cost formula. A low-value duplicate may not justify a long manual repair even when its final price is higher.

Section 04

Condition and the price tracker

Because condition changes sell value, this site does not publish fixed universal prices. Track your own sales by rarity and condition, and use the community-reported trend as a rough guide rather than a guarantee.

Section 05

Swapping duplicates

The official store explicitly says cards can be swapped for better ones, but it does not publish the complete exchange rules on the store page. Before committing a scarce copy, read the current in-game prompt: verify what is being surrendered, what quality is promised, and whether the operation can be cancelled. Treat swapping as a condition-management tool, not as evidence that it can force a particular missing card.

Section 06

A safe repair workflow

Identify the card before moving pieces, keep the work area clear, and begin with the most distinctive corners or borders. Rotate and place pieces deliberately instead of rapidly testing every position. When the card is complete, compare its name, rarity, condition, and displayed value with the pre-repair state. If a piece will not register, stop before overwriting or discarding anything, capture the screen, and reload only through normal menus. This process is slower than guessing but produces useful evidence if the interface is actually failing.

Section 07

Repair for collection or repair for profit

These are different decisions. Collection repair protects a design you still need, so certainty is more important than immediate income. Profit repair asks whether the improved selling price is worth the manual time. Use duplicate cards to estimate that tradeoff in your current build because economy updates can change upgrade prices, card values, and the opportunity cost of another trash run. Do not publish one fixed best threshold as if every rarity and condition shares the same numbers.

Section 08

How to handle late-game repair fatigue

Retail community feedback describes repeated repairs as tedious once duplicates become common. That complaint establishes a player pain point, not an existing automation feature. Reduce unnecessary work by checking the design and condition before starting, keeping only the copies that serve a collection or sale goal, and grouping repair sessions rather than interrupting every dump run. If the developer later adds automation, update the guide from the official patch note instead of presenting a community feature request as implemented.

Section 09

Diagnosing a repair that will not complete

Confirm that every visible fragment belongs to the current card and that no piece is hidden under another. Reset the view using only available interface controls, then retry the border pieces. Note the game version, input device, display resolution, and whether the same fragment fails after a normal restart. Avoid editing saves or using third-party tools. A concise reproduction sequence posted to the official Steam discussion area is more useful than a report that only says the puzzle is broken.

Section 10

What this guide does not claim

It does not claim that condition changes HP or ATK, that every foil can be damaged, that one exchange always improves rarity, or that a repaired copy always satisfies a set achievement. Those details require direct retail evidence or an official explanation. Where the current public evidence stops, the in-game value and binder state remain the authority. This boundary keeps repair advice useful without turning reasonable assumptions from other card games into KOTAMON facts.

Sources

KOTAMON Steam Store Page — Official text on card condition and value.Checked 2026-08-24
KOTAMON DB — Card Values — Explanation of why fixed universal prices are misleading.Checked 2026-08-24