Quick Answer
Foil cards should be tracked separately from normal card ownership. A base set can be complete while foil progress is still incomplete, and the Steam achievements A True Fan and The Collector make that distinction important.
How to Level Up Cards for Foil Chances
Open the collection binder, look for a card stack with three copies of the same card at the same Quality, then use the green Level Up button when the UI marks it eligible. The August 27 patch notes say the result is one higher-Quality card and may even be foil.
Guaranteed Foil vs Officially Confirmed Foil
Officially confirmed: Level Up can produce a foil result and cereal boxes are linked with super-rare foil cards. Not officially confirmed here: a universal guaranteed-foil probability, fixed pity count or save-manipulation route. Community guides may describe guaranteed methods, but this page keeps those separate from developer-confirmed mechanics.
What Foil Cards Are
Foil cards are treated here as a special visual/collection variant, not as a separate base-card set. The site does not claim that every documented card has a confirmed foil version until direct gameplay evidence confirms it.
How Foils Are Obtained
The official Steam page links unopened cereal boxes with super-rare foil cards. The August 22 update also made Nyanchi Crunchi boxes more common in trash and documented Jenny’s $10,000 late-game shop price after all stats are maxed. This wiki still does not publish exact foil odds because no reviewed source provides a reliable rate.
Cereal Box Workflow
Before opening boxes, export tracker progress. Open one box or a small batch, record the card name, set, rarity and whether the front is visibly foil, then update only the foil checkbox for the confirmed result.
How to Identify a Foil
Count a card as foil only when the card itself visibly presents as foil in-game. Do not infer foil status from rarity alone, from a shiny-looking UI effect, or from a card back without checking the front/card entry.
How to Track Foils Safely
Mark the normal card as Collected when you own any version of it. Mark Foil only when the card itself is visibly foil. If you replace or sell a duplicate, export your tracker first so you do not lose a clean before-and-after record.
Achievement Planning
A True Fan requires a full set of foil cards. The Collector requires all foil cards. Because the card dataset currently has 40 color-set cards plus Kotalion as a special community entry, the tracker exposes foil checkboxes for every documented entry but labels foil eligibility unknown until stronger evidence is available.
Known Unknowns
Exact foil odds, pity behavior, fixed cereal-box locations and whether Kotalion has a foil form are not promoted as facts yet. These stay unknown until official notes, screenshots or repeatable gameplay verification are attached.
Current Patch Context
For the August 22 build, cereal boxes are officially easier to find in trash and Jenny’s documented cereal-box price is $10,000 after max stats. Treat those as acquisition context, not as proof of a guaranteed foil result.
FAQ
Does SR or SSR mean foil? No. Rarity and foil status are separate fields.
Can a base set be complete without foil completion? Yes. Base-set achievements and foil achievements should be tracked separately.
Should I mark all cards foil after opening one cereal box? No. Mark only the observed foil card.