Cosmic Encounter

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

Overview

Cosmic Encounter is a social negotiation and hand-management game where each player is a unique alien species attempting to colonize foreign planets. Players use diplomacy, alliances, and force to establish colonies outside their home system. The first player to have 5 foreign colonies wins. If multiple players reach 5 foreign colonies simultaneously, they share the victory.

Components

Setup

  1. Choose Player Color: Each player takes a color and receives the colony marker, 5 planets, and 20 ships of that color.
  2. Set Up Warp, Planets, Ships, and Colonies: Place planets in front of each player, stack 4 ships on each planet, place the Warp in the center, and set colony markers at “0.”
  3. Prepare Destiny Deck: Take the 3 destiny cards matching each chosen player color. Shuffle them with wild and special destiny cards. Return unchosen colors to the box.
  4. Choose Aliens: Shuffle cosmic combo cards, reveal the top card, gather indicated alien sheets, and deal one randomly to each player.
  5. Prepare Cosmic Deck: Shuffle encounter, reinforcement, and artifact cards to create the cosmic deck.
  6. Deal Starting Hands: Deal 8 cards to each player.
  7. Choose First Player: Youngest player in first game; otherwise reveal cards from the destiny deck – the first color shown that matches a player determines the first player.

Turn Structure

The active player (offense) takes a turn consisting of these phases:

  1. Regroup: Retrieve 1 ship from the Warp to any home colony.
  2. Destiny: Draw the top card of the destiny deck. The color shown determines the defense player (whose system you must encounter). Wild and Special cards have unique effects.
  3. Launch: Place the hyperspace gate aimed at any planet in the defense player’s system. Place 1-4 ships from any of your colonies onto the gate.
  4. Alliance: Offense and defense each invite other players to ally. Allies commit 1-4 ships.
  5. Planning: Offense and defense each select 1 card from hand and place it face down.
  6. Reveal: Both encounter cards are revealed simultaneously and resolved.
  7. Resolution: Determine the outcome based on the revealed cards.

If the offense wins or makes a successful deal, they may have a second encounter (max 2 encounters per turn).

Actions

Encounter Cards:

Winning an Encounter (Offense): Offense and allied ships land on the targeted planet, establishing colonies. Defense and allied ships go to the Warp.

Winning an Encounter (Defense): Offense and allied ships go to the Warp. Defense ships remain. Defensive allies receive defender rewards (draw 1 card from deck or retrieve 1 ship from Warp per ship committed).

Artifacts: Played at specified times to create special effects. Discarded after use.

Reinforcement Cards: Played after encounter cards are revealed to add to either side’s total.

Flare Cards (Advanced Game): Unique cards tied to each alien. Each has a “super” effect (if you are that alien) and a “wild” effect (if you are not).

Tech Cards (Advanced Game): Placed face down and researched by placing ships on them. Once fully researched (enough ships), flip face up to gain the tech’s ongoing ability.

Scoring / Victory Conditions

Special Rules & Edge Cases

Player Reference

Phase Action
Regroup Retrieve 1 ship from Warp
Destiny Draw destiny card to determine opponent
Launch Aim gate, place 1-4 ships
Alliance Invite allies; allies commit 1-4 ships
Planning Select 1 encounter card face down
Reveal Flip cards simultaneously
Resolution Determine winner; place/remove ships
Encounter Result Offense Wins Defense Wins
Ships Land on planet Go to Warp
Allies (offense) Land on planet Go to Warp
Allies (defense) Go to Warp Defender rewards