THE COMPLETE REALMS
All five factions enter the physical release.
Thornbound, Gloomborn, Duskforged, Sunshatter, and Starweave move forward together, each with its own gameplay identity, worldbuilding, and visual language.
First Clash · Play free
THE WORLD IS BROKEN.
THE WORLD IS BROKEN.
CHOOSE WHAT SURVIVES.
Build Settlements, mine persistent Reactors for AP, command creatures, and protect your two Guardian Dragons. Start with a complete Common-card First Clash Preview — no purchase required.
42 Cards Total · Per Faction Deck2 Guardian Dragons · Included in the 42
REACTOR REALMSv1.5PHYSICAL RELEASE · IN DEVELOPMENT
The Realms are expanding.
Five factions. More than 100 Legends. A new visual era.
Reactor Realms v1.5 is just around the corner. We are rebuilding the physical release around the full scope of the game — all five factions, a dramatically expanded archive of 100+ Legend cards, and improved art direction designed to give every Realm, creature, Reactor, and remembered figure a stronger identity on the table.
THE ARCHIVE OPENS
100+ Legend cards expand the history of the world.
The Legends pool is growing far beyond a handful of showcase characters, bringing remembered heroes, creatures, and damaged pieces of Reactor Realms history into the wider card pool.
IMPROVED ART DIRECTION
A stronger identity for every card and Realm.
v1.5 pushes the artwork toward clearer faction silhouettes, more deliberate environments, stronger lore continuity, and a more consistent Reactor Realms visual language across the release.
What makes Reactor Realms different
A battlefield built around choices, not just card drops.
Three systems define the rhythm of every match.
01
Persistent Reactors
Reactors stay in play. Mine one on your turn to create AP, then decide how much to spend and how much to hold for reactions.
02
Settlements Shape the Board
Your Settlements define creature capacity and become part of the battle itself. Build them, defend them, and rebuild when they fall.
03
Guardian Dragons
Two Dragons wait outside the battlefield, share your life total, and provide powerful Blessings when you need them most.
Cards from First Clash
See the game before you read a wall of rules.
Real cards from the current Thornbound and Gloomborn preview.
Free to play. On purpose.
Print it. Sleeve it. Play it.
First Clash gives each player a complete 42-card Common-only faction deck. Two of those cards are Guardian Dragons that are set aside during setup; the remaining 40 cards form the Silverpool, including Settlements and Reactors. The free preview is not a demo that stops halfway through a match — it is a real entry point to Reactor Realms.
- Choose Thornbound or Gloomborn
- Generate the current Print & Play PDF in your browser
- Play the complete rules with no purchase required
Five surviving Realms
Choose the people whose story you want to carry.
Each Realm developed its own answer to a world destabilized by Silverflow.
Optional physical expansion
Like the free game? Put the Realms on your table.
Professional physical products are being developed to expand the free Common preview with printed cards, broader deckbuilding, higher rarities, boosters, and accessories.
Fixed entry product
Clash Decks
Thornbound, Gloomborn, or both together.
Collect & expand
First Clash Boosters
Additional cards and higher-rarity deckbuilding choices.
Table accessory
Official Playmat
A dedicated board layout for Reactors, Settlements, Silverpool, and AP.
Explore Physical ProductsThe free First Clash Preview remains playable without buying anything.
More than a card pool
A broken history connects every match.
Reactor Realms is a game world of damaged memories, surviving peoples, unstable Silverflow, and truths buried beneath the Collapse. The cards show what the Realms remember. The deeper story lives beyond the battlefield.
