Steam Siege
XY series
- Released
- Cards
- 114+2 secret · 93 reverse holo
- Set code
STS
Steam Siege is a Pokémon TCG expansion from the XY series. It was released on August 3, 2016. Its set code is STS. The numbered set contains 114 cards. Including 2 secret rares brings the full card list to 116. A master set contains 209 cards when every printed variant is counted. The two most valuable cards are Gardevoir EX at about $107.82 and M Gardevoir EX at about $59.44. Buying one of each card in the numbered set currently costs about $285.77. The current estimate for a master set is $509.96. The median card costs $0.28, so the more expensive cards account for most of the set's value.
Market insightsSee what the set costs to complete and how its value has changed.~$285.77 base · ~$509.96 master~$285.77 base~$509.96 master
Steam Siege price statistics
- Most expensive card
Gardevoir EX#116 · $107.82- Cheapest card
Pawniard#63 · $0.09- Average card value
- $3.72
- Median card value
- $0.28
Prices from TCGplayer · updated yesterday
Steam Siege price history
The historical TCGplayer market cost of completing the numbered base set.
Market-price estimate, methodology v1. Base selects the cheapest priced collectible finish for each non-secret card; Master sums each exact collectible finish. Marketplace listing lows are not used.
Steam Siege card list (116 cards)
Create a binder for Steam Siege and choose the printings you want to collect. Mark each card as you get it.
Create a binderMost valuable cards in Steam Siege
- 1Gardevoir EXSecret Rare·#116/114$107.82
- 2
M Gardevoir EXUltra Rare·#112/114$59.44 - 3
Volcanion EXSecret Rare·#115/114$38.01 - 4
M Steelix EXUltra Rare·#109/114$29.70 - 5
Gardevoir EXUltra Rare·#111/114$26.29 - 6
M Gardevoir EXUltra Rare·#79/114$22.13 - 7
Steelix EXUltra Rare·#108/114$18.39 - 8
Professor SycamoreUltra Rare·#114/114$11.84 - 9
M Steelix EXUltra Rare·#68/114$10.04 - 10
Volcanion EXUltra Rare·#107/114$9.47
Steam Siege sealed product prices
Sealed products are priced separately and are not included in the set value.
Steam Siege Booster Box
$1,177.49
Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]
$142.49
Mega Gyarados Collection Box
$598.67
Steam Siege Elite Trainer Box
$1,800.00
Steam Siege Booster Pack
$30.02
XY Steam Siege Sleeved Booster Pack
$35.00Prices from TCGplayer
FAQ about Steam Siege
What is the full Steam Siege card list?
The complete Steam Siege card list contains 116 cards. The first 114 use the regular set numbering (#1–#114). The remaining 2 are secret rares (#115–#116). This page shows the cards in collector order. You can open any card for its variants and current price, or sort the list by price.
How many cards are in Steam Siege?
Steam Siege has 114 cards in the base set and 116 cards in total once secret rares are included. 93 cards also exist as reverse holo variants, which is why a full master set is larger than the printed set number.
What is a Steam Siege master set?
A Steam Siege master set contains every card and every printed variant. This includes the normal, holo and reverse holo versions that exist for each card. The total for Steam Siege is 209 cards. Completing it currently costs around $509.96 in singles, compared with about $285.77 for the base set alone.
What are the top chase cards in Steam Siege?
The biggest chase cards in Steam Siege are Gardevoir EX (#116, ~$107.82), M Gardevoir EX (#112, ~$59.44) and Volcanion EX (#115, ~$38.01). Most of the set's value sits in its 2 Secret Rare cards, which average $72.91 each. The ten most valuable cards are listed on this page with prices updated daily.
What is the most expensive card in Steam Siege?
Gardevoir EX (#116) is currently the most expensive card in Steam Siege, at around $107.82. The next most valuable is M Gardevoir EX at about $59.44. Prices refresh daily from TCGplayer and Cardmarket.
When was Steam Siege released?
Steam Siege was released on August 3, 2016, as part of the XY series, under the set code STS.
How much does it cost to complete Steam Siege?
Completing the Steam Siege base set costs around $285.77 in singles at current market prices, and a master set with every secret rare and variant runs about $509.96. The median card costs $0.28, which means the most expensive cards account for most of the total.
How many secret rares are in Steam Siege?
Steam Siege has 2 secret rares. They are numbered #115 to #116, after the 114 cards in the regular set. They break down as 2 Secret Rare cards.
What do Steam Siege sealed products cost?
Current market prices include Steam Siege Booster Box at about $1,177.49, Steam Siege Elite Trainer Box at about $1,800.00, Steam Siege Sleeved Booster Pack Art Bundle [Set of 4] at about $142.49 and Steam Siege Booster Pack at about $30.02. The latest price snapshot is dated September 1, 2026, and prices can change.
