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Card count, chase cards, value and how it compares with other promotional releases.
Gym Challenge is a promotional collection for the Japanese Pokémon TCG, filed under the Promos & Other era rather than a standard expansion run. Its card list is led by basic Energy cards, with Metal Energy (2003), Basic Fire Energy (2006) and Basic Metal Energy (2006) as the headline names. The collection holds 21 catalog printings, a compact run compared with a full expansion, and none of it is built around a rarity ladder of chase cards.
Gym Challenge does not work like a booster set with a pull ladder, so the cards that matter here are specific promotional printings. Metal Energy (2003) leads the collection, followed by Basic Fire Energy (2006) and Basic Metal Energy (2006). All three are Energy cards, which says a lot about this promo collection: its value sits in distinctive printings of cards that are otherwise common in play, not in rare creatures or alternate art. Anyone ranking the most valuable cards in Gym Challenge is really comparing three Energy printings from 2003 and 2006.
Gym Challenge has 21 cards.
Gym Challenge is part of the Promos & Other era.
Metal Energy (2003), at $5.00, as of November 3, 2026.
As of October 2026, Gym Challenge is best placed by its kind. A promo collection of 21 printings is far smaller than a full Japanese expansion, which typically runs to a card list in the dozens or more and a rarity structure from commons up to secret cards. It sits in the Promos & Other era, where sets are collections of distributed cards, so its value is spread across a short run instead of a deep pool of chase cards. Its top three cards are Energy printings, a profile quite unlike an expansion's illustration rares and ex cards.
Written from market data as of October 29, 2026; the tables update live.
Completing Gym Challenge means tracking down 21 catalog printings, of which 3 are priced. Because the most valuable cards are the Metal Energy (2003) and the 2006 Basic Fire and Basic Metal Energy printings, the cost of a full run depends mostly on those few entries, while the remaining printings are a minor part of the total. The short card list keeps the project small, though promotional printings can take patience to locate in a given condition.