Marvel United

Readiness

draft-ready (confidence=0.67, rules=0.65, fun=0.70). BGG rank: 331; year: 2020; weight: 1.84; playtime: 40 min

Core Loop

Marvel United is a cooperative superhero card game (CMON / Spin Master). Players each play a hero with a unique deck of action cards. On your turn, you play one card from hand to the storyline (a shared row of cards) — your card resolves its TOP icons (movement, attack, draw, hero-specific) PLUS the BOTTOM icons of the card the previous player placed (creating a chain). After playing, the villain card flips and triggers villain actions (move, attack, advance threats). Heroes coordinate to clear threats on locations and ultimately defeat the villain by depleting their HP.

Turn Structure and State

• No manual/BGA/transcript source is present; card relies on memory plus BGG context.
• BGG description anchor: In Marvel United, you take the role of iconic Marvel Heroes cooperating to stop the master plan of a powerful Villain controlled by the game. Each Villain unveils their unique master plan, with cards that trigger different effects, and threats that pose challenges across the locations. Heroes must choose carefully the cards to play from their unique decks, that not only offer different actions and superpowers [...]

Win Condition and Arc

Win by defeating the villain (deplete villain HP) before completing 3 missions and within the deck of villain cards. Lose if villain deck depletes (master plan completes) or all heroes are KO'd. Arc: ~30–45 min, frantic, with constant collaborative tempo.

Decision Primitives

BGG mechanisms: Cooperative Game, Hand Management, Modular Board, Solo / Solitaire Game, Variable Player Powers

Memory-derived primitives:

• Cooperative card play
• Card-chaining (top of yours + bottom of previous)
• Mission-based scenarios (each villain has unique threats and victory conditions)
• Asymmetric hero decks
• Threat track (lose if villain advances enough)

v4 controlled primitives: card_combo_chaining, variable_player_powers, escalating_threat, on_play_trigger

Top iOS archetype fits: coop 6.6, balatro 6.0, snap 5.7.

Why It Is Fun

Card-chaining creates real coordination — playing after a teammate amplifies their card. Quick, accessible, beautiful chibi minis. Highly modular: each new hero/villain box is plug-and-play.

Friction and Failure Modes

• Treat Sonnet-memory edge rules as draft until confirmed by manual, BGA, or transcript.
• Needs at least one stronger rules authority before final extraction use.

Translation and Design Hooks

• Use this card to ask: which primitive carries the fun if theme/licensing is removed?
• For iOS, look for short-session compression, clear state visualization, and a digital-only twist.
• For new tabletop design, look for the tension source and decide whether to preserve or invert it.

Edge Rules and Gotchas

• Card chain: you resolve TOP of YOUR played card and BOTTOM of the previously-played card in the storyline. First player has no "previous" so resolves only top.
• Storyline limit: when storyline reaches a length cap (e.g., 6 cards), the oldest cards "shift off" — limited space.
• Each hero has a special hero ability and a unique deck (10ish cards).
• Villain master plan: villain has a deck that flips a card each round triggering attacks; if it depletes, heroes lose.
• Locations have threats (civilians, bystanders, items); clearing threats counts toward missions.
• Missions: 3 mission cards per scenario; completing all unlocks the ability to deal final damage to the villain.
• KO: a hero at 0 HP is KO'd briefly, then revives with reduced effects.
• Solo and 2-handed play supported.

Sources Used

[
  {
    "kind": "llm_memory",
    "path": "data/llm_memory_sonnet/298047.md",
    "quality": 0.65,
    "note": "sonnet-self-rated-8"
  }
]