Clank!: Catacombs

Setup and turn: the base game supports 2–4 players. Each receives ten starting cards, three Lockpicks and a five-card hand. Play all cards in any order and interleave actions. Skill buys cards or uses Devices, Swords fight or prevent tunnel-monster damage, and Boots move; these resources expire at turn end.

Deck building and purchases: acquired ordinary cards enter your own discard pile. Devices resolve immediately and enter the Dungeon discard; defeated monsters also go there after awarding their rewards. Refill the Dungeon Row to six only at turn end. Each Market item costs seven Gold, and you may buy several while in a Market room.

Exploration and movement: each tunnel costs at least one Boot; Footprint tunnels normally cost two. Each monster icon deals one damage unless prevented by one Sword. Moving off an unexplored edge reveals the next tile; rotate it and align a complete edge while being able to finish the tunnel’s Boot and Lock requirements. The first four discovered tiles are safe; darker tiles are the Depths.

Artifacts and locks: take an artifact as an action while in its room, not necessarily upon entering. You cannot discard or exchange it; normally you carry one, with Backpacks increasing capacity. Each taken artifact raises dragon rage. A Lockpick permanently opens a tunnel lock for everyone, or opens a single-use Chest, Library or Prison.

Tile features: a Crystal Cave prevents further Boot spending that turn; teleportation remains possible but does not remove exhaustion. A normal portal journey into another portal’s room costs one Boot for the whole journey and still obeys tunnel icons; teleport effects ignore intervening tunnel icons. Each reward room pays at most once per turn. Marking a new Wayshrine earns Gold equal to the number you have marked in total.

Noise and attacks: put Clank! in the Clank! area first. If any newly revealed refill card has a Dragon Attack symbol, make one attack: move all Clank! cubes into the bag and draw according to rage and Danger cards. Your color damages you. Each white Ghost damages every active player, then returns to the Clank! area to enter the bag again next attack.

Escape and knockout: arriving at the Crypt with an artifact escapes; finish the turn and take a 20-point Mastery token. A knockout without an artifact or in the Depths scores zero; the starting tile’s upper half is also in the Depths. Departed players stop normal turns and instead put Clank! into the bag and draw exactly four cubes each later turn, or six in two-player games, ignoring rage and Danger.

Ending and scoring: when everyone has escaped or been knocked out, eligible players total artifacts, Gold, other tokens and all cards in their personal decks; each Gold scores one. The most valuable artifact breaks a score tie. Failing to refill the Dungeon Row, or an empty Dragon Bag after an attack, immediately knocks out all remaining players.