Add to the base game: 10 new alien powers (Anti-matter, Calculator, Diplomat, Filch, Gambler, Insect, Judge, Machine, Miser, Sorcerer) 1 system hex, 4 star discs, and 20 tokens for a sixth player (originally gold, later purple) Expands: Cosmic Encounter Other expansions: Cosmic Encounter: Expansion Set #1 Cosmic Encounter: Expansion Set #3 Cosmic Encounter: Expansion Set #4 Cosmic Encounter: Expansion Set #5 Cosmic Encounter: Expansion Set #6 Cosmic Encounter: Expansion Set #7 Cosmic Encounter: Expansion Set #8 Cosmic Encounter: Expansion Set #9