2025-26 Upper Deck Series 1 Hockey Mass Blaster Box: what's inside

What's in a 2025-26 Upper Deck Series 1 Hockey mass blaster box

Packs

4

Cards per pack

12

Cards in all

48

Counts from Upper Deck's own page [1].

• Each Mass Blaster has one Young Guns card. [1]
• Each Mass Blaster has one Green Dazzlers card; the Green Dazzlers are found only in select blasters and the Starter Kit. [1]
• Beyond those two, each Mass Blaster carries at least nine more insert or parallel cards. [1]

Released: October 15, 2025, as reported by checklistinsider.com [2]

Every 2025-26 Upper Deck Series 1 Hockey box, side by side

• Hobby BoxHobbyCounts not published

  Exclusives and Deluxe parallels are found only in hobby and e-Pack product, not retail.

• Mass Blaster BoxRetail4 x 12 = 48 cards

  Each Mass Blaster has one Young Guns card.

Rookie cards to find in 2025-26 Upper Deck Series 1 Hockey

Every format of a set carries the same base rookie cards. These are the ones with a Parlae card page, each with its card number, then rookies Upper Deck's checklist names that we have not covered yet.

• Ivan DemidovUpper Deck Series 1 #205
• Luca CagnoniUpper Deck Series 1 #213
• Ryan LeonardUpper Deck Series 1 #238
• Artyom LevshunovChicago Blackhawks#201
• Gabe PerreaultNew York Rangers#202
• Olivier RodrigueEdmonton Oilers#203
• Carter MazurDetroit Red Wings#204
• Tim WasheAnaheim Ducks#206
• Jimmy SnuggerudSt. Louis Blues#207
• Jack FinleyTampa Bay Lightning#208
• Jani NymanSeattle Kraken#209
• Karsen DorwartPhiladelphia Flyers#210
• Riley DuranBoston Bruins#211
• Ozzy WiesblattNashville Predators#212
• Ryan SuzukiCarolina Hurricanes#214
• Sam MortonCalgary Flames#215
• Oliver MooreChicago Blackhawks#216
• Rodrigo AbolsPhiladelphia Flyers#217
• Colton DachChicago Blackhawks#218
• Noah OstlundBuffalo Sabres#219
• Niklas KokkoSeattle Kraken#220
• Nikita TolopiloVancouver Canucks#221
• Michael CallahanBoston Bruins#222
• Elias PetterssonVancouver Canucks#223
• Quinn HutsonEdmonton Oilers#224
• Jacob GaucherPhiladelphia Flyers#225
• Dalibor DvorskySt. Louis Blues#226
• Owen SillingerColumbus Blue Jackets#227
• Matthew WoodNashville Predators#228
• Donovan SebrangoOttawa Senators#229
• Jacob MelansonSeattle Kraken#230
• Marc GatcombNew York Islanders#231
• Ian MooreAnaheim Ducks#232
• Ville KoivunenPittsburgh Penguins#233
• Dominik ShineDetroit Red Wings#234
• Rory KerinsCalgary Flames#235
• Zayne ParekhCalgary Flames#236
• Joakim KemellNashville Predators#237
• Matthew RobertsonNew York Rangers#239
• Ethen FrankWashington Capitals#240
• Jacob QuillanToronto Maple Leafs#241
• Cam LundSan Jose Sharks#242
• Justin RobidasCarolina Hurricanes#243
• Jakub SkarekNew York Islanders#244
• Victor OstmanSeattle Kraken#245
• Parker FordWinnipeg Jets#246
• Skyler Brind'AmourCarolina Hurricanes#247
• Sam RinzelChicago Blackhawks#248
• Dylan DukeTampa Bay Lightning#249

Inserts, parallels and autographs in 2025-26 Upper Deck Series 1 Hockey

• Series 1 holds the first 250 cards of the 2025-26 Upper Deck base set: 198 veterans, 49 Young Guns rookies and three checklists. [3]
• The Young Guns rookie run sits at cards 201 to 249, and card 250 is a checklist. [4]
• Outburst Silver parallels cover the complete base set. [5]
• Returning inserts are UD Canvas, Population Count, Dazzlers and UD Portraits. [3]

2025-26 Upper Deck Series 1 Hockey mass blaster box questions

How many packs are in a 2025-26 Upper Deck Series 1 Hockey Mass Blaster Box?

4 packs, each with 12 cards, per Upper Deck's own page.

How many cards are in a 2025-26 Upper Deck Series 1 Hockey Mass Blaster Box?

48 cards: 4 packs of 12.

When did 2025-26 Upper Deck Series 1 Hockey come out?

October 15, 2025, as reported by checklistinsider.com.

Sources

1. upperdeckstore.com/2025-26-upper-deck-series-1-hockey-cards-blaster.html
2. checklistinsider.com/2025-26-upper-deck-series-1-hockey
3. upperdeck.com/2025-26-upper-deck-series-one/
4. upperdeck.com/checklist/2025-26-ud-series-1-checklist/
5. upperdeck.com/product/2025-26-upper-deck-series-1-hockey-cards-mass-blaster/