Which Expansion

Space Base expansions

Base game: 2–5 players60 minAlderac Entertainment Group6 expansions checked
  1. #1 overall

    Space Base: Genesis

    Buy this first

    BGG rates it 8.42 from 238 ratings. BGG posters who dislike the saga expansions single it out as the one that adds variety with little overhead and does not need the other expansions.

    Needs: Just the base game

    Adds: A large pool of new cards with extra paths to victory for experienced players and only a few simple new rules for newer players.

    Expansion2–5 playersAbout the same rules loadFine for any group
    DetailsReference:View on BoardGameGeekBuy:Alderac Entertainment Group
  2. #2 overall

    Space Base: Biodome

    Worth it

    BGG rates it 8.08 from 199 ratings. Several BGG posters name it their favourite mini expansion; it adds colony-card variety without adding complexity, and costs $9.99 at AEG.

    Needs: Just the base game

    Adds: Hypernet colony cards that can be placed in any sector instead of an assigned one, giving more variety to the late game.

    Mini expansion2–5 playersAbout the same rules loadFine for any groupPrice: Under $20
    DetailsReference:View on BoardGameGeekBuy:AEG Store
  3. #3 overall

    Space Base: The Emergence of Shy Pluto

    Depends on your group

    BGG rates it 7.69 from 1,556 ratings. BGG players split: some say it is the only expansion that improves the game, while others find its cards overpowered or dislike the ship tokens and dice.

    Needs: Just the base game

    Adds: Story-based scenarios that introduce new ships and modules one by one, which you can then mix permanently into the core game.

    Expansion2–5 playersAdds more rulesFine for any groupPrice: $20–$40
    DetailsReference:View on BoardGameGeekBuy:AEG Store
  4. #4 overall

    Space Base: Command Station

    Depends on your group

    BGG rates it 7.74 from 886 ratings. A BGG poster calls it a great addition for larger groups, but AEG sells it for $44.99, about the base game price, so it suits groups of five or more.

    Needs: Just the base game

    Adds: Two new Commodore captains and two new zones, with extra dice and components that raise the player count to seven.

    More players2–7 playersAbout the same rules loadFine for any groupPrice: $40–$60
    DetailsReference:View on BoardGameGeekBuy:AEG Store
  5. #5 overall

    Space Base: Dreadnaught Promo Pack

    Depends on your group

    BGG rates it 7.78 from 235 ratings. Owners call it twelve more cards of the same game; some like the variety, one thinks it was a waste of money if you buy the bigger expansions.

    Needs: Just the base game

    Adds: Twelve level-2 ships, many with multiple rewards or Hard Way rewards for rolling doubles.

    Mini expansion2–5 playersAbout the same rules loadBest for casual groupsPrice: Under $20
    DetailsReference:View on BoardGameGeekBuy:AEG Store
  6. #6 overall

    Space Base: The Mysteries of Terra Proxima

    Most groups can skip

    BGG rates it 7.53 from 299 ratings, the lowest of the set. Posters warn it can unbalance play when combined with Shy Pluto, so buy it only after many plays of the base game.

    Needs: Just the base game

    Adds: A second saga with new ruins and fungi-themed cards and a new way to expand the game, intended for players with many plays.

    Expansion2–5 playersAdds more rulesBest for experienced groupsPrice: $20–$40
    DetailsReference:View on BoardGameGeekBuy:AEG Store

Need the base game?

Reference:View on BoardGameGeekBuy:Alderac Entertainment Group

Stuck between two?

Space Base expansions: quick answers

Which Space Base expansion should I buy first?

Space Base: Genesis. BGG rates it 8.42 from 238 ratings. BGG posters who dislike the saga expansions single it out as the one that adds variety with little overhead and does not need the other expansions.

Is Space Base: Genesis worth it?

Our verdict: buy this first. It adds: A large pool of new cards with extra paths to victory for experienced players and only a few simple new rules for newer players.

Can I play Space Base with more players?

Space Base: Command Station extends it to 7 players. Our verdict: depends on your group.

Space Base: Genesis or Space Base: Biodome: which first?

We’d buy Space Base: Genesis first. See the side-by-side comparison for what each adds and needs.

Other games’ expansion guides

Same publisher

Rankings are our editorial picks, built from the reviews linked on each expansion page. Last checked 2026-10-15.