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Best Diplomacy Games

Top 50 of 84 qualifying games — tagged Diplomacy (community voting), 1,000+ reviews · ranked by Wilson lower bound on Steam review score · review data as of 2026-10-22. Under each game: what its Steam reviewers most often mention (+ praise, − complaint), with how many of about 100 most-helpful reviews raise it — from the review consensus on each game's page.

1 Ages of Conflict: World War Simulator (2023) Idler · Simulation · Sandbox · $6.99 + easy-to-learn creative sandbox 84+ cheap price, excellent value 12− shallow mechanics, becomes repetitive 9 96.3%9,385 reviews 2 Sid Meier's Civilization V (2010) Turn-Based Strategy · Strategy · Turn-Based · $7.49 + addictive deep turn-based strategy 57+ varied civilizations, victories, and mods 26− crashes and persistent feature bugs 6 95.6%211,155 reviews 3 The Life and Suffering of Sir Brante — Chapter 1&2 (2020) Interactive Fiction · Choose Your Own Adventure · Diplomacy · Free + Rich, compelling narrative 45+ Meaningful choices and consequences 36− Slow pacing and heavy reading 8 96.2%2,039 reviews 4 Politics The Game (2025) Political Sim · Strategy · Simulation · $9.99 95.2%2,600 reviews 5 The Battle of Polytopia (2020) Strategy · Turn-Based · Multiplayer · $14.99 + Simple yet engaging strategy 74+ Easy to learn, hard master 15− Shallow mechanics and imbalance 10 93.9%6,015 reviews 6 Sins of a Solar Empire: Rebellion (2012) Management · Diplomacy · Online Co-Op · $19.99 + Real-time strategy with tactical depth 61+ Dedicated modding community with quality mods 15 93.2%16,367 reviews 7 Nova Roma (2026) Strategy · Simulation · City Builder · $29.99 + Satisfying city-building mechanics 43+ Frequent updates and future improvements 17− Underdeveloped combat and logistics 31 93.3%2,502 reviews 8 Romance of the Three Kingdoms XI with Power Up Kit (2018) Turn-Based Tactics · Wargame · War · $19.99 + deep strategic management 18+ reasons to keep returning 7− missing official English support 17 92.4%4,123 reviews 9 Victoria II (2010) Grand Strategy · Strategy · Historical · $19.99 + deep economic and political simulation 20− crashes glitches and jank 7 91.9%20,021 reviews 10 Whiskerwood (2025) Strategy · Simulation · City Builder · $29.99 + Deep colony management 66+ Frequent developer updates 21− Frustrating production bottlenecks 13 92.4%3,987 reviews 11 Renowned Explorers: International Society (2015) Strategy · Adventure · RPG · $19.99 + Distinct conflict resolution 51+ Varied crews and outcomes 23− Harsh RNG difficulty spikes 10 91.6%2,909 reviews 12 Heart of the Machine (2026) Strategy · Simulation · Grand Strategy · $29.99 + choice-driven strategy systems 62+ branching thoughtful AI narrative 48− shallow visual-novel gameplay 16 91.5%2,139 reviews 13 Total War: SHOGUN 2 (2011) Strategy · Historical · Turn-Based Strategy · $29.99 + deep engaging tactical strategy 61+ timeless ink-wash visuals 9− repetitive units and flawed mechanics 10 90.4%69,502 reviews 14 Total War: SHOGUN 2 (2011) Strategy · Historical · Turn-Based Strategy · $29.99 + deep, tactical, streamlined strategy gameplay 76+ varied clans, modes, and mods 20− shallow systems and frustrating combat 8 90.4%69,502 reviews 15 Crusader Kings II (2012) Grand Strategy · Strategy · Medieval · Free + deep, addictive medieval strategy gameplay 70+ endless emergent role-playing variety 11− expensive, essential DLC ecosystem 20 90.3%73,913 reviews 16 Hearts of Iron IV (2016) Strategy · World War II · Grand Strategy · $49.99 + fun deep strategy gameplay 67+ mods and varied campaigns 15− steep confusing learning curve 36 89.8%363,348 reviews 17 China: Mao's legacy (2019) Political Sim · Strategy · Simulation · $6.99 91.4%1,048 reviews 18 Age of History II (2018) Strategy · Historical · War · $5.99 + simple addictive sandbox strategy 79+ easy learning with rewarding challenge 16− vanishing armies and turn glitches 11 89.8%50,332 reviews 19 Sid Meier's Civilization III Complete (2006) Strategy · Turn-Based Strategy · Turn-Based · $0.99 + addictive, complex strategic gameplay 38+ endless replay value for decades 5− crashes, compatibility issues frequently 8 89.5%7,839 reviews 20 Guilty as Sock! (2025) Multiplayer · Simulation · Sandbox · $5.50 + Funny courtroom roleplay 66+ Fun with friends 20− Sparse or toxic playerbase 19 89.3%5,819 reviews 21 HighFleet (2021) Singleplayer · Indie · Strategy · $14.99 + Unique tactical depth and customization 77+ Immersive atmospheric visual design 29− Steep learning curve, trial and error 14 88.3%7,447 reviews 22 Tropico 6 (2019) City Builder · Strategy · Simulation · $39.99 + fun, deep dictator city-building 76+ funny dialogue, characters, and satire 8− stale, frustrating core mechanics 16 87.7%29,542 reviews 23 Europa Universalis IV (2013) Grand Strategy · Strategy · Historical · $49.99 + deep, addictive grand strategy systems 58+ endless addictive campaigns and mods 27− steep, poorly explained learning curve 28 86.9%134,961 reviews 24 Dummynation (2022) Grand Strategy · Military · Simulation · $11.99 + Strategic nation-conquest sandbox 39+ Easy entry, harder mastery 8− Spam-and-luck combat systems 8 87.9%3,278 reviews 25 Solium Infernum (2024) Strategy · Turn-Based Strategy · Politics · $39.99 + Deep strategic diplomacy and planning 37+ Asynchronous play with friends 17− Steep learning curve and randomness 11 88.2%1,728 reviews 26 DEFCON (2006) Tactical · PvP · Online Co-Op · $11.99 + Intense, strategic, addictive gameplay 32+ Haunting vector aesthetic and atmosphere 7− Steep learning curve, overpowered AI 9 87.4%4,394 reviews 27 King Of The Castle (2023) Strategy · Choices Matter · Fantasy · $9.99 + Fun social political gameplay 41+ Fun with friends and groups 33− Shallow repetitive voting gameplay 9 87.9%1,738 reviews 28 Stellaris (2016) Space · Grand Strategy · Strategy · $49.99 + expansive customizable empire-building sandbox 45+ varied repeat empire playthroughs 9− too many overpriced DLCs 20 85.7%197,192 reviews 29 Twilight Struggle (2016) Board Game · Strategy · Tabletop · $9.99 + faithful board-game adaptation 44+ better play with live opponents 11− weak or cheating AI 15 86.5%2,990 reviews 30 NOBUNAGA'S AMBITION: Souzou (2014) Wargame · Immersive Sim · Real Time Tactics · $24.99 + Flexible strategic systems 8− English language missing 7 86.7%1,247 reviews 31 Age of History 3 (2024) Wargame · Strategy · Grand Strategy · $9.99 + Creative freedom and strategic depth 49+ Approachable yet challenging difficulty progression 14− Late-game clicking and missing features 21 85.0%18,914 reviews 32 Fabledom (2024) City Builder · Relaxing · Colony Sim · $20.99 + Relaxing, satisfying, easy-to-learn gameplay 61+ Charming fairytale aesthetic 33− Oversimplified mechanics lacking depth 31 85.2%7,883 reviews 33 Corsair Cove (2026) Strategy · Simulation · City Builder · $29.99 + vertical logistics building 52+ vertical pirate island aesthetics 35− repetitive card-based combat 36 85.4%3,703 reviews 34 Computer Tycoon (2017) Hardware · Software · Grand Strategy · $19.99 + Deep business-management systems 46+ Challenging strategic learning curve 20− Extreme or uneven difficulty 15 85.3%1,023 reviews 35 Age of History 2: Definitive Edition (2026) Political Sim · Wargame · Sandbox · $9.99 + Deeper map-painting strategy 17+ Large maps and abundant content 6− Frequent crashes and broken saves 19 84.3%2,979 reviews 36 ENDLESS Legend™ 2 (2026) Strategy · Simulation · Grand Strategy · $24.99 + Asymmetric factions and evolving maps 54+ Beautiful art direction and visuals 34− Slow, shallow, or forced systems 29 83.6%4,087 reviews 37 Crisis in the Kremlin (2017) Political Sim · Strategy · Cold War · $1.99 + Political decisions shape outcomes 38+ Challenging political decision-making 7− Poor tutorials and steep learning 19 84.2%1,463 reviews 38 Idle Research (2022) Idler · Clicker · Free to Play · Free + Addictive layered idle mechanics 49+ Smooth, rewarding upgrade progression 11− Abandoned unfinished game for sequel 20 83.9%1,909 reviews 39 House of Legacy (2025) Early Access · Sandbox · Management · $14.99 + deep clan management systems 44+ pleasant colorful Chinese visuals 7− shallow repetitive late game 14 83.3%3,987 reviews 40 Old World (2022) Strategy · Simulation · 4X · $39.99 + Deep strategic mechanics with family focus 78+ Steep but ultimately rewarding learning curve 18− Tedious execution despite interesting concepts 20 82.5%6,915 reviews 41 Rebel Inc: Escalation (2021) Strategy · Simulation · Political Sim · $14.99 + engaging strategic gameplay and depth 65+ well-balanced challenging difficulty 17− unfair mechanics and poor feedback 19 82.0%7,596 reviews 42 Democracy 4 (2022) Strategy · Political Sim · Politics · $29.99 + Fun, flexible policy sandbox 69− Shallow design, repetitive mechanics 25 81.8%6,409 reviews 43 Hexarchy (2023) Turn-Based · Card Game · Resource Management · $1.99 + Fast card-based Civ gameplay 46+ Quick one-hour matches 23− Limited depth and repetitive mechanics 11 81.9%1,656 reviews 44 NEBULOUS: Fleet Command (2022) Strategy · Space · Simulation · $29.99 + Deep tactical fleet combat 69+ Welcoming helpful communities 15− Extreme learning cliff 23 81.1%4,440 reviews 45 ENDLESS Space - Definitive Edition (2012) Strategy · 4X · Space · $9.99 + Engaging 4X strategy 43+ Excellent soundtrack 6− Poor combat depth 13 80.6%9,617 reviews 46 Terra Invicta (2026) Strategy · Simulation · Grand Strategy · $39.99 + Deep strategic systems and engaging mechanics 82+ Challenging learning curve with rewarding mastery 27− Tedious grinding and repetitive late-game loops 32 80.2%9,946 reviews 47 Half-Earth Socialism (2022) Simulation · Strategy · Card Game · Free + resource-management strategy 14+ steep climate-management challenge 9− opaque climate policy paths 17 81.5%1,023 reviews 48 Dune: Spice Wars (2023) Management · Singleplayer · Sci-fi · $34.99 + Strategic depth with multiple playstyles 79+ Authentically captures Dune universe 18− Unfair AI and unclear design 19 79.1%13,585 reviews 49 Microcivilization (2026) Clicker · Base-Building · Resource Management · $17.99 + Civ-clicker resource management 38+ Challenging yet approachable 12− Brutal late-game crises 18 78.6%1,455 reviews 50 Total War: ROME REMASTERED (2021) Strategy · Grand Strategy · Turn-Based Strategy · $29.99 + addictive strategic depth and faction variety 64+ improved graphics maintain original aesthetic 11− damaged AI and unit balance issues 20 77.1%13,803 reviews