👇 Explore every card in the set
Browse every tracked card in Steam Siege with live prices, 24h moves, and collector details. Use Hits and Chase when you want a focused view of the set.
Release date, card count, chase cards and how it compares with the XY era.
Steam Siege is an XY-era expansion in the English-language Pokémon TCG, built around 114 official cards with 2 secret cards numbered above the count, for 116 printings in all under the set code STS. The release date was August 3, 2016. The card list leans on Grass, Water, Fire and Metal Pokémon, and it is defined by its EX cards: Gardevoir EX, Volcanion EX, M Gardevoir EX, M Steelix EX and Magearna EX each appear in more than one version, and Gardevoir EX and Volcanion EX show up three times apiece.
The Steam Siege pull ladder runs from commons and uncommons through rares to 21 Ultra Rares, with the 2 Secret Rares sitting past the printed count. The most valuable cards are the secret Gardevoir EX, illustrated by Eske Yoshinob, then the Ultra Rare M Gardevoir EX, the secret Volcanion EX, and the Ultra Rare M Steelix EX. Illustrator 5ban Graphics signed three of those four and 19 cards in the set overall. The top five cards hold 59 percent of the set's total card value, so the chase is narrow and concentrated in the EX cards.
Steam Siege was released August 3, 2016.
Steam Siege has 116 cards.
Steam Siege is part of the XY era.
23 cards in Steam Siege sit at one of its hit rarities. See this set's hits page for the full breakdown by rarity.
As of October 2026, Steam Siege sits 14th of the 14 comparable XY sets by total card value, about 0.3 times the era median, and 119th across the whole game's 130 comparable sets. Its single most valuable card also ranks 14th in the era, while trading activity places it 11th. At 114 printed cards it is about the same size as the era median of 113. It came after Fates Collide, which holds more total value, and before Evolutions, which also holds more. Many of its cards first appeared in the Japanese sets Fever-Burst Fighter and Cruel Traitor, released June 17, 2016.
| Measure | This setSteam Siege | Previous setFates Collide | Next setEvolutions |
|---|---|---|---|
| Release date | Aug 3, 2016 | May 2, 2016 | Nov 2, 2016 |
| Printed cards | 114 | 124 | 108 |
| Master set value | — | ≥ $872.47 | $793.80 |
| Most valuable card price | — | $165.87 | $124.85 |
| Priced cards | — | 126 of 129 | 113 of 113 |
A complete Steam Siege run is 116 printings, and all 116 are priced. Because the top five cards carry 59 percent of the set's value, the cost of finishing the run is driven by a handful of EX cards, while the commons, uncommons and rares that make up most of the card list are easy to fill. Sealed product is well covered, with 25 products including a booster box, a booster case, Elite Trainer Boxes, tins, blisters, decks and booster packs.
Market comparisons as of October 2026.
Sealed Steam Siege: all 25 products with prices
0 instruments match — clear filters
Clear filters