Arborea

AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant

Overview

Arborea is a worker placement game with a time-based mechanism. Players are Patron Spirits guiding villagers to heal and regenerate a cataclysm-scarred landscape. You send villagers on pilgrimage tracks that advance over time, and when activated, villagers follow trails to regenerate biomes, complete ecosystem cards, train new villagers, and attract creatures. The player with the most Regeneration Points (RP) wins.

Components

Setup

  1. Place board centrally. Randomly place 8 pilgrimage track tiles (2 per track) on outermost spaces.
  2. Shuffle ecosystem decks separately; place by requirement count (fewest left, most right).
  3. Randomly place 6 borderland tiles on column tops.
  4. Randomly place 4 season tiles on season spots.
  5. Place biome tiles on matching ‘0’ spots of biome reserve.
  6. Place creatures in outer regions.
  7. Place sun counter on time track per player count.
  8. Each player takes player board, components, starting ecosystem card, and a starting ecosystem task.
  9. In reverse player order, each player sends 1 villager to a pilgrimage track and advances that track 1 step.

Turn Structure

Turns are taken clockwise. Each turn has 4 steps:

  1. Pilgrimage: You MUST either send a villager to a track OR advance a track 1 step. You may spend 3 spirit to do one of these a second time.
  2. Activate Villagers: Activate up to 3 villagers waiting at trail beginnings. First 2 are free; 3rd costs 2 spirit.
  3. Complete Ecosystem Task: You may complete 1 current ecosystem task if you have the required biomes.
  4. Update: Update biome reserve and advance pilgrimage tracks.

The game ends when the sun counter reaches the last time track spot, after which all players get 2 more turns.

Actions

Sending a Villager: Place a villager from your supply onto a pilgrimage track square. If the square has a season icon, advance your matching season track. Cannot place on an occupied square.

Advancing a Track: Push the track tiles 1 step toward center. All players may take villagers off the track to place them at trail beginnings. After 4 total steps, the inner tile swaps to the start.

Activating a Villager: Follow the trail from beginning to end, collecting all rewards encountered:

Villager Types:

Completing Ecosystem Tasks: Spend the required combination of biomes (reducing the reserve) to complete a task card. The card joins your ecosystem grid, and you gain any listed rewards.

Creatures: Placed on your ecosystem grid. At game end, creatures score RP based on surrounding biome types and habitats.

Scoring / Victory Conditions

End-Game Scoring:

The player with the most RP wins. Tiebreaker: player furthest on the spirit track.

Special Rules & Edge Cases

Player Reference

Turn Step Action Cost
1. Pilgrimage Send villager OR advance track Free (2nd: 3 spirit)
2. Activate Activate up to 3 villagers Free/Free/2 spirit
3. Complete Complete 1 ecosystem task Required biomes
4. Update Advance tracks, update reserve Automatic
Biome Types Icon
Tree, Flower, Mushroom, Weed, Sponge, Water Various