Which Expansion

Twilight Imperium: Fourth Edition expansions

Base game: 3–6 players240–480 minFantasy Flight Games2 expansions checked
  1. #1 overall

    Twilight Imperium: Prophecy of Kings

    Buy this first

    Regular TI4 groups treat it as the default; one BGG regular says they would never play base without it. It is all-or-nothing, so groups who find base TI4 heavy enough may skip it.

    Needs: Just the base game

    Adds: Seven new factions with mechs and three leaders each, exploration decks with relics, 40 new tiles, legendary planets and two extra colors for up to 8 players.

    Fixes: Base-game factions can feel thin and the map static; exploration, leaders and mechs give every faction more to do, and 7–8 player games become possible.

    Expansion3–8 playersAdds more rulesBest for experienced groupsPrice: $100+
    DetailsBuy:Asmodee StoreMiniature Market
  2. #2 overall

    Twilight Imperium: Thunder's Edge

    Worth it

    BGG regulars like that it is modular but warn it adds overlapping rules and is wilder than Prophecy of Kings. Buy it after Prophecy of Kings if your group wants more variety.

    Needs: Needs the Twilight Imperium Fourth Edition base game; works with or without Prophecy of Kings.

    Adds: Five new factions, a breakthrough card per faction, a new expedition and legendary planet, the Fracture, 20 galactic events, the Council Keleres faction and the Twilight's Fall mode.

    Fixes: Breakthroughs buff weaker factions, galactic events let groups vary each game, and players who never printed the free Codex PDFs get that content in the box.

    Expansion3–6 playersAdds more rulesBest for experienced groupsPrice: $100+
    DetailsBuy:AmazonAsmodee Store

Need the base game?

Buy:AmazonAsmodee StoreMiniature Market

Check before you buy

  • 7–8 player games need Prophecy of Kings, even if you also own Thunder’s Edge.

Stuck between two?

Twilight Imperium: Fourth Edition expansions: quick answers

Which Twilight Imperium: Fourth Edition expansion should I buy first?

Twilight Imperium: Prophecy of Kings. Regular TI4 groups treat it as the default way to play: one BGG regular calls it "clean and elegant" next to Thunder's Edge, and another says they would never play the base game without it. It is all-or-nothing, so groups who find base TI4 heavy enough may skip it.

Is Twilight Imperium: Prophecy of Kings worth it?

Our verdict: buy this first. It adds: Seven new factions, faction mechs, three leaders per faction (agent, commander, hero), exploration decks with relics, 40 new system and hyperlane tiles, legendary planets, and two extra player colors for up to 8 players.

Twilight Imperium: Prophecy of Kings or Twilight Imperium: Thunder's Edge: which first?

We’d buy Twilight Imperium: Prophecy of Kings 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 2026-10-08.