Best expansion for base-game board games

The top expansion for base-game games out of 177 in this category, ranked by BoardGameGeek community rating. Carcassonne The Expansion leads the list.

City BuildingCarcassonne The Expansion (2002)
2–6 players · 60 min · ★ 7.6
Complexity
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City BuildingCarcassonne Traders & Builders (2003)
2–6 players · 60 min · ★ 7.6
Complexity
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Expansion for Base-gameThe Cities and Knights of Catan (1998)
3–4 players · 90 min · ★ 7.5
Complexity
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CivilizationThe Seafarers of Catan (1997)
3–4 players · 90 min · ★ 7.2
Complexity
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Expansion for Base-gameThe Settlers of Catan 5-6 Player Extension (1996)
5–6 players · 120 min · ★ 7.0
Complexity
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AncientAdvanced Civilization (1991)
2–8 players · 360–480 min · ★ 8.0
Complexity
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City BuildingCarcassonne The River (2001)
2–5 players · 30–45 min · ★ 7.0
Complexity
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Collectible ComponentsBlood Bowl Living Rulebook (2004)
2 players · 120 min · ★ 7.8
Complexity
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BluffingCitadels The Dark City (2004)
2–8 players · 60 min · ★ 7.0
Complexity
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City BuildingCarcassonne The Princess & the Dragon (2005)
2–6 players · 60 min · ★ 6.8
Complexity
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Expansion for Base-gameBeyond Valor ASL Module 1 (1985)
2 players · 120 min · ★ 8.5
Complexity
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BluffingA Game of Thrones A Clash of Kings Expansion (2004)
3–6 players · 120–180 min · ★ 7.8
Complexity
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Expansion for Base-gameThe Cities and Knights of Catan 5-6 Player Expansion (2000)
5–6 players · 120 min · ★ 7.1
Complexity
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CivilizationThe Seafarers of Catan 5-6 Player Expansion (1999)
5–6 players · 120 min · ★ 7.0
Complexity
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AdventureLord of the Rings Friends & Foes (2001)
2–5 players · 90 min · ★ 7.3
Complexity
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Expansion for Base-gameBANG! Dodge City (2004)
3–8 players · 20–40 min · ★ 6.9
Complexity
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Card GameMunchkin 2 Unnatural Axe (2002)
3–6 players · 90 min · ★ 6.4
Complexity
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Expansion for Base-gameRoboRally Armed and Dangerous (1995)
2–8 players · 90 min · ★ 7.8
Complexity
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Action / DexterityPitchCar Extension 1 (1997)
2–8 players · 20 min · ★ 7.6
Complexity
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Card GameMunchkin 3 Clerical Errors (2003)
3–6 players · 90 min · ★ 6.5
Complexity
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City BuildingCarcassonne King & Scout (2003)
2–5 players · 45 min · ★ 6.6
Complexity
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Card GameThe Settlers of Catan Card Game Expansions (2002)
2 players · 90 min · ★ 7.1
Complexity
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Expansion for Base-gameRoboRally Crash and Burn (1997)
2–8 players · 120 min · ★ 7.8
Complexity
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Expansion for Base-gameRed Barricades ASL Historical Module 1 (1990)
2 players · 180 min · ★ 8.7
Complexity
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Expansion for Base-gameYanks ASL Module 3 (1987)
2 players · 120 min · ★ 8.2
Complexity
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Expansion for Base-gameCross of Iron A Squad Leader Gamette (1978)
1–2 players · 60 min · ★ 7.7
Complexity
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Expansion for Base-gameHeroQuest Return of the Witch Lord (1991)
2–5 players · 120 min · ★ 7.2
Complexity
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Expansion for Base-gameHeroQuest Kellar's Keep (1991)
2–5 players · 120 min · ★ 7.2
Complexity
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AncientCivilization West Extension Map (1986)
2–7 players · 360 min · ★ 7.8
Complexity
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Expansion for Base-gameSpace Hulk Deathwing Expansion (1990)
1–4 players · 45 min · ★ 8.0
Complexity
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Card GameBanzai (1984)
1–2 players · 60 min · ★ 8.2
Complexity
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AdventureLord of the Rings Sauron (2002)
3–6 players · 120 min · ★ 6.9
Complexity
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AdventureHeroscape Expansion Set Malliddon's Prophecy (2004)
2–4 players · 60 min · ★ 7.7
Complexity
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EconomicAge of Steam Expansion #1 England & Ireland (2003)
3–6 players · 180 min · ★ 8.1
Complexity
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City BuildingAlhambra The Vizier's Favor (2004)
2–6 players · 45–60 min · ★ 6.9
Complexity
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Expansion for Base-gameRoboRally Grand Prix (1997)
2–8 players · 120 min · ★ 7.8
Complexity
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Card GameBohnanza Erweiterungs-Set (Revised Edition) (2001)
3–7 players · 60 min · ★ 7.0
Complexity
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Expansion for Base-gameBlood Bowl DeathZone (1994)
2 players · 120 min · ★ 7.6
Complexity
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Expansion for Base-gameParatrooper ASL Module 2 (1986)
2 players · 120 min · ★ 7.8
Complexity
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American WestBANG! High Noon (2003)
4–7 players · 30 min · ★ 6.7
Complexity
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AdventureHeroscape Expansion Set Utgar's Rage (2005)
2–4 players · 60 min · ★ 7.8
Complexity
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Expansion for Base-gameRoboRally Radioactive (1998)
2–8 players · 120 min · ★ 7.5
Complexity
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Expansion for Base-gameCode of Bushido ASL Module 8 (1991)
2 players · 120 min · ★ 8.3
Complexity
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Action / DexterityJungle Speed The Extreme Expansion (2003)
2–15 players · 15 min · ★ 7.1
Complexity
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AdventureDungeon Twister Paladins & Dragons (2004)
2 players · 60 min · ★ 7.5
Complexity
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ArabianAlhambra The City Gates (2004)
2–6 players · 60 min · ★ 7.1
Complexity
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Expansion for Base-gameCroix de Guerre ASL Module 10 (1992)
2 players · 120 min · ★ 8.2
Complexity
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Expansion for Base-gameFor King and Country ASL module 5a (2003)
2–6 players · 240 min · ★ 8.6
Complexity
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AdventureRunebound The Island of Dread (2005)
2–6 players · 120 min · ★ 7.2
Complexity
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Expansion for Base-gameWest of Alamein ASL Module 5 (1988)
2 players · 120 min · ★ 8.0
Complexity
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Expansion for Base-gameArmies of Oblivion ASL Module 12 (2006)
2 players · 0 min · ★ 8.4
Complexity
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Expansion for Base-gameUrsuppe Frisch Abgeschmeckt (1998)
3–6 players · 90 min · ★ 7.3
Complexity
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Expansion for Base-gameAge of Steam Expansion #3 Scandinavia and Korea (2004)
3–6 players · 120 min · ★ 7.8
Complexity
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AdventureTalisman Expansion Set (1986)
2–6 players · 120 min · ★ 7.0
Complexity
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City BuildingCarcassonne The Count of Carcassonne (2004)
2–6 players · 60 min · ★ 6.0
Complexity
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Expansion for Base-gameCrescendo of Doom (1979)
2 players · 60 min · ★ 7.3
Complexity
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EconomicAge of Steam Expansion #2 Western US and Germany (2003)
3–6 players · 120 min · ★ 7.8
Complexity
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Expansion for Base-gameDoomed Battalions ASL Module 11 (1998)
2 players · 120 min · ★ 8.3
Complexity
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Expansion for Base-gameGung Ho! ASL Module 9 (1992)
2 players · 120 min · ★ 8.1
Complexity
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BookDie Siedler von Catan Das Buch zum Spielen (2000)
2–6 players · 60 min · ★ 7.3
Complexity
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