KKOTAMONIndependent field guide
Field guide

KOTAMON Known Issues, Updates & Safe Troubleshooting

A version-aware KOTAMON troubleshooting hub covering demo-to-retail migration, achievements, disappearing bags, card repair fatigue, and safe bug reports.

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

Section 01

Start by identifying the version and save origin

Before applying any workaround, record the installed game version, whether the save began in the demo or retail release, and the last action that completed normally. KOTAMON launched on August 20, 2026, after a demo period with different balance and progression. Advice written for the demo may describe finite trash piles, older upgrade prices, or an earlier card pool. A version-aware report prevents an intentional migration change from being confused with a new retail save failure.

Section 02

Demo money and upgrades were intentionally reset

The developer's first major retail update explains that money and upgrade progress from the demo were reset because the economy and upgrade costs had been recalculated. The same announcement says card collection progress was preserved. If an imported save has its cards but not its former money or upgrades, that pattern matches the announced migration. It should not be described as a Cloud save loss without additional evidence. Verify the binder first and avoid deleting the migrated save in an attempt to restore planned-reset values.

Section 03

Achievement fixes after launch

The developer acknowledged that several achievements were broken at launch. The announcement specifically mentions a white-set completion achievement that could fail to unlock and an all-upgrades achievement that could unlock incorrectly. These examples establish that launch-era achievement reports may be version-specific. Update the game, allow Steam to synchronize, restart Steam normally once, and compare the visible requirement with current progress. Do not use an unofficial achievement unlocker; preserve the save and report a reproducible mismatch if the current build still fails.

Section 04

A bag disappearing from the player's hands

The same retail update says the team attempted to fix a bug where a bag could disappear from the player's hands, while openly noting uncertainty about the fix. That wording matters: it is evidence of a recognized symptom, not proof that every later disappearance has the same cause. If it happens, note the pile, held item, input, and action immediately before the disappearance. Restart through normal menus only after recording the sequence, then report whether the bag returned or the state persisted.

Section 05

Recovering a valuable item sent to the grinder

A post-launch change allows a valuable collectible such as a figurine thrown into the trash grinder to be picked up again. Treat recovery as protection from an accident, not as a recommended storage or duplication method. Move collectibles away from routine trash, confirm whether the display or achievement updated, and retrieve the object through the normal game interface. If recovery fails, capture the grinder area and current collection count before reloading so the report documents both the action and result.

Section 06

Cereal boxes and collectible frequency changed

A later developer update increased the frequency of Nyanchi Crunchi cereal boxes and the chances of finding figurines and cosplay cases. It also described a cereal-box purchase from Jenny's shop after all stats are maxed, with a post-update price of $10,000. These are balance details and can change again. Check the latest announcement and current shop rather than treating an older frequency, price, or expected grind length as permanent. A dry run by itself is not evidence that the item was removed.

Section 07

Card repair fatigue is feedback, not a confirmed bug

Retail players have reported that manually assembling card pieces becomes repetitive late in the collection and have proposed automatic-repair perks. That discussion proves a user pain point, but it does not prove that an auto-repair system already exists or that the puzzle is malfunctioning. Use duplicates to decide whether a repair is worth the time, group repair sessions, and report only reproducible interface failures as bugs. Feature requests should be labeled as requests so they do not become false instructions in a guide.

Section 08

Safe troubleshooting order

Use reversible checks first: read the newest official announcement, confirm the build, compare the binder and achievement requirement, exit through the game menu, restart Steam once, and reproduce the issue without overwriting the affected state. Take screenshots and record input device, resolution, save origin, and exact steps. Avoid deleting saves, editing files, disabling cloud synchronization, or installing third-party tools unless official support provides a specific procedure. Preserving evidence is more valuable than an aggressive fix that makes the original state impossible to inspect.

Section 09

How to write a useful Steam bug report

Use a descriptive title and separate expected behavior from observed behavior. Include the game version, Windows version, save origin, relevant card or achievement name, and a numbered reproduction sequence. State whether the issue survives a normal restart and attach only the minimum screenshot needed to show it. Do not include email addresses, account tokens, full local paths containing your real name, or uploaded save files unless the developer provides a private approved channel. One precise report is more useful than repeated promotional or duplicate threads.

Section 10

What belongs on this tracker

This page records developer-confirmed changes, reproducible retail symptoms, and reversible diagnostic steps. A single community complaint can establish demand for an answer but cannot establish that every player is affected. Suspected fixes remain labeled as attempts when the developer does so. Economy numbers are dated, and demo behavior is not used to prove retail mechanics. When an official patch resolves an item, the entry should be updated rather than left as an evergreen warning designed only to attract search traffic.

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