A co-op roguelike deckbuilder for 1-3 players. Run the party of three yourself, or bring two friends. Share one resource pool, hand your block to an ally, and fight in eight zones that each rewrite the rules of battle. Walk inward, from the rim of the continent to the Spire at its center.
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Match strength key:80+65+50+<50Soulbuilder
SteamAbout Soulbuilder
The blessing became the disaster. The blessed cannot die — they only keep growing. The continent is a target. The Endless Spire stands dead center, and the blessing spreads outward from it. You start at the outermost ring and walk inward. Soulbuilder is a co-op roguelike deckbuilder for up to three players. Run the party of three yourself, or bring two friends. The rules are the same either way.
Three of you, one battle
Most deckbuilders are played alone. Here three people stand in the same fight and share the same things.
Nine heroes, twenty-seven pillars
Every hero has three pillars — build axes designed so their effects never bleed into one another. A handful of cards into a run, it is already clear what deck you are playing.
Each of the 27 pillars comes with a hands-on demonstration. Tempering is an axis you stack for several turns and release at once; Formation is an axis where the same card does different things depending on where you place it. They are shaped differently, so they are taught differently.
Where you fight is itself a rule
The eight zones are not just different backdrops. Each one imposes a battlefield rule, and every rule is a gain and a cost in one line. There is no good land and no bad land.
Four acts; you choose a branch in each. Which road to take is not "which is easier" but "what can our deck survive."
To awaken, beat your own shadow
When a hero meets the condition, a shadow appears running that hero's own deck. Beat that trial to awaken; clear it once more to transcend. You may also postpone it and move on — but then an elite in the next zone comes mixed with the shadow you left behind.
Everything is paid for
How it looks
Hand-drawn card art; 3D characters standing on the field like paper cutouts. The blessing erases color — the outer zones still hold theirs, and the deeper you walk, the more the white light washes shape away.
Who made it
Solo-developed. Written in Korean and translated into English and other languages. Online co-op runs on Steam friend invites — this was built as a game you play with people you know.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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