Grand StrategyEconomy
3 games that share both with Sigma Theory
Terra Invicta
Sigma Theory, but historical, and nine times the hours
Liked · 80%Games like Terra Invicta
Europa Universalis IV
Sigma Theory, but military, and 39 times the hours
Liked · 87%Games like Europa Universalis IV
Political SimGrand Strategy
6 games that share both with Sigma Theory
Age of History II
Sigma Theory, but historical, and four times the hours
Loved · 90%Games like Age of History II
Victoria II
Sigma Theory, but real-time with pause, and eight times the hours
Loved · 92%Games like Victoria II
Crusader Kings II
Sigma Theory, but free to play, and 16 times the hours
Loved · 91%Games like Crusader Kings II
Grand StrategyTurn-Based Strategy
11 games that share both with Sigma Theory
Heroes of Might and Magic: Olden Era
Much the same as Sigma Theory
ENDLESS Legend 2
Sigma Theory, but historical, and twice the hours
Liked · 84%Games like ENDLESS Legend 2
Sid Meier's Civilization V
Sigma Theory, but 17 times the hours, and even better loved
Loved · 96%Games like Sid Meier's Civilization V
Sid Meier's Civilization VI
Sigma Theory, but eight times the hours
Liked · 86%Games like Sid Meier's Civilization VI
Total War: THREE KINGDOMS
Sigma Theory, but military, and seven times the hours
Liked · 82%Games like Total War: THREE KINGDOMS
Total War: MEDIEVAL II - Definitive Edition
Sigma Theory, but medieval, and ten times the hours
ENDLESS Space 2
Sigma Theory, but in space, and five times the hours
Liked · 83%Games like ENDLESS Space 2
Age of Conquest IV
Sigma Theory, but free to play, and a board game
Liked · 82%Games like Age of Conquest IV
Political SimTurn-Based
3 games that share both with Sigma Theory
The Political Process
Sigma Theory, but four times the hours, and even better loved
Loved · 95%Games like The Political Process
And more like Sigma Theory
Each with the kinds it shares, under its name.
Tropico 6
Sigma Theory, but a city builder, and three times the hours
Liked · 88%Political Sim · EconomyGames like Tropico 6
RISK: Global Domination
Sigma Theory, but free to play, and a board game
Mixed · 79%Turn-Based Strategy · Turn-BasedGames like RISK: Global Domination
Galactic Civilizations II: Ultimate Edition
Sigma Theory, but with base building, and sci-fi
Mixed · 77%Grand Strategy · Turn-BasedGames like Galactic Civilizations II: Ultimate Edition
Dune: Spice Wars
Sigma Theory, but sci-fi, and twice the hours
Mixed · 79%Grand Strategy · ManagementGames like Dune: Spice Wars
Crusader Kings III
Sigma Theory, but medieval, and nine times the hours
Loved · 90%Grand Strategy · ManagementGames like Crusader Kings III
ENDLESS Space - Definitive Edition
Sigma Theory, but in space
Liked · 81%Turn-Based Strategy · Turn-BasedGames like ENDLESS Space - Definitive Edition
The Shrouded Isle
Sigma Theory, but horror, and 2D
Mixed · 70%Political Sim · Turn-Based StrategyGames like The Shrouded Isle
Which of these do you already own?
Your Steam profile link or name: the games here that sit in your library unopened are wrapped and lit. Public profiles only. No account needed, and no library is saved.
Games like another game
How this list is made
A game is here when it shares the strongest of Sigma Theory's Steam community tags, Steam genres and IGDB themes, each shared tag counting for more the fewer games carry it: two metroidvanias are alike, two action games barely. Games of Sigma Theory's own series that play like it stand apart, above the list, and take no place on it. A similar typical length breaks near-ties, and a game sold twice is shown once. A game Steam marks adult-only is listed only for a game that is one too. Games that share the same kinds with Sigma Theory stand together, under those kinds. Up to 30 games are shown, and the list stops where they grow much less alike. Where to start: the closest; the best loved of the closest fifteen with 10,000 reviews or more; the shortest of the ones 80% or more recommend; and a hidden gem, 90% or more but under 10,000 reviews.
Under each name, how it differs from Sigma Theory: a kind of game it is that Sigma Theory is not, a feature its strongest Steam tags carry that Sigma Theory's barely do, how many hours people play it beside Sigma Theory, and how its reviewers feel beside Sigma Theory's.
The sticker on a case is the hours its own page leads with: half of the game's Steam reviewers had played that long or less when they gave their verdict. It is not a time to beat. Under a name, the share of its Steam reviewers who recommend it: loved at 90% or more, liked at 80%, mixed at 65%.