Mulligan Keep game cover

Mulligan Keep CD Key

Mulligan Keep is a cooperative deck-building dungeon crawler for 1–4 players as four adventurers exploring a mage's castle. Play cards to dodge monsters, avoid traps, and seek a hidden artifact before the dungeon collapses with time and noise.
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Release Date

23 May, 2026

Publisher/Developer

Maven Studios LLC

Reviews

Steam: 50.00% positive (3/6)
Metacritic: -

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Current Steam price: FREE
Lowest Steam price ever: FREE — 2026-10-19 — Current low
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Mulligan Keep description

Mulligan Keep

Mulligan Keep is a cooperative deck-building dungeon crawler that puts you in the shoes of one of four adventurers. You’ll venture into a mage’s castle, exploring with up to three friends by your side as you search for a hidden artifact. The game emphasizes teamwork, sharp decision-making, and shared strategy as you navigate shifting corridors, confront escalating threats, and uncover clues that steer you toward your ultimate prize. Every run offers new layouts, encounters, and mysteries to uncover beneath the castle’s vaulted arches.

Each round you select and play cards from your personal deck to influence how you move, fight, and survive. You’ll dodge swarming monsters, sidestep traps, and choose routes through the mansion’s twisting halls. The way you deploy spells, weapons, and actions affects the whole group, because some cards empower allies, some reveal hidden paths, and some punish mistakes by drawing you deeper into danger.

Deck-building is at the heart of Mulligan Keep. Between expeditions you tailor your deck to reflect your character’s strengths and your evolving plan. The cooperative design encourages constant communication: you share information about threats you’ve spotted, coordinate timing so combined effects land together, and seek synergies that let your team overcome guardians that stand in the artifact’s way.

Time pressure and environmental danger drive the tension. The more time passes and the louder the group’s movements, the more the dungeon groans and begins to collapse around you. This dynamic forces you to balance exploration with decisive risk-taking, manage scarce resources, and push toward objectives before the castle seals you inside.

Your shared objective is to reach the hidden artifact while racing the collapse. Each session presents a fresh layout and new hazards, ensuring that your choices matter and that no two runs feel identical. Cooperation, timing, and smart deck-building determine who preserves their courage—and who learns from mistakes.

Mulligan Keep is designed for bold teamwork and repeat play. It scales with your group size, delivering a tight, tense experience for up to four players that remains approachable for newcomers who want to master the rhythm of deck-building and cooperative exploration.

  • Cooperative play for up to four players
  • Deck-building core with evolving personal decks
  • Explore a mage's castle and seek the hidden artifact
  • Time pressure as the dungeon collapses with noise