AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant
Eclipse is a 4X (explore, expand, exploit, exterminate) space civilization game. Each player controls a spacefaring species competing for galactic dominance over 9 rounds. Players explore sector hexes, colonize planets, research technologies, customize ships, and engage in combat. Every action taken costs Influence (and thus Money to maintain), creating a tension between expansion and economic sustainability. The player with the most Victory Points at game end wins.
The game lasts 9 rounds. Each round has 4 phases:
Starting with the Starting Player and going clockwise, each player takes one action or passes. Continue until all players have passed. First to pass gets the Starting Player Marker for next round. Each action requires moving an Influence Disc from the Influence Track to the Action Track (increasing Upkeep costs).
Resolve all battles between opposing forces on shared hexes.
Pay Money equal to the Upkeep cost shown by the leftmost visible circle on the Influence Track. Then produce Resources (Money, Science, Materials) based on exposed Population Track values.
Return Influence Discs from Action Track to Influence Track. Draw new Technology Tiles. Flip Colony Ships face up.
Draw a hex from the appropriate stack and place it adjacent to a hex where you have a Ship or Disc, with wormhole connections matching. Take control by placing an Influence Disc; claim Discovery Tile if present. Ancient Ships must be destroyed before claiming.
Move up to 2 Influence Discs: from your track to empty hexes adjacent to your controlled hexes, or from hexes back to your track. Also flip 2 used Colony Ships face up.
Choose an available Technology Tile from the Supply Board, pay its Science cost (with discounts from existing tech in that category), and place it on your Player Board.
Modify ship blueprints: return any number of Ship Parts to supply, then take up to 2 new Ship Parts and place them on your blueprints. All ships of that type are instantly upgraded. Must maintain energy balance and drive requirements.
Build up to 2 Ships or Structures, paying Material costs. Place in hexes where you have an Influence Disc. Ships: Interceptor (3), Cruiser (5), Dreadnought (8), Starbase (3). Structures: Orbital (3), Monolith (10).
Make up to 3 ship movements. Each ship moves up to its Movement Value (based on Drives). Ships can only move through full wormhole connections. Ships entering hexes with enemy forces become “pinned” (one per opposing ship).
A weaker action: Upgrade (take 1 part), Build (build 1), or Move (1 ship, 1 move).
At any time during your action, activate face-up Colony Ships to place Population Cubes from your tracks onto Population Squares in hexes you control. Flip activated Colony Ships face down.
After 9 rounds, score Victory Points:
Highest VP total wins. Tiebreaker: most Resources remaining.
Round structure: Actions > Combat > Upkeep > Cleanup
Actions (each costs 1 Influence Disc): Explore, Influence, Research, Upgrade, Build, Move
Resources: Money (pays Upkeep), Science (pays Research), Materials (pays Building)
Colony Ships: Activate any time during your action to place Population Cubes
Combat dice: Yellow (safe), Orange (moderate), Red (powerful); roll to hit based on Computer vs Shield values
Game length: 9 rounds
Win condition: Most Victory Points