PlayfeedGames like Diplomacy is Not an Option
by Door 407
Diplomacy is Not an Option is an isometric 3D fantasy base-building RTS: base building, resource management and combat. They Are Billions and Becastled play most like Diplomacy is Not an Option. Of the 12 closest games below, most share its base building.
View on Steam · $29.99 →
Ranked by how similar the games actually are, not by sales. Released and Price are remembered for next time.
Closest matches
They Are Billions
Jun 18, 2019 · Numantian Games
Both: Base Building · Colony Sim · Zombies
Isometric 2D post-apocalyptic RTS survival strategy, steampunk digital art. Building colonies, managing resources and fighting infected swarms.
Base BuildingColony SimStrategyZombiesSurvivalRTSTower DefenseCity BuilderSteampunkBuilding👍 46,259Becastled
Oct 22, 2025 · Mana Potion Studios
Both: Base Building · Medieval · RTS
Isometric 3D fantasy strategy city builder RTS, stylized low poly. Building a castle, growing a settlement and defending against sieges.
Base BuildingStrategyCity BuilderMedievalBuildingRTSColony SimWarMilitarySingleplayer👍 5,357Thronefall
Oct 11, 2024 · GrizzlyGames, Mythwright
Both: Tower Defense · Medieval · Action RTS
Isometric 3D fantasy action RTS strategy, minimalist colorful. Building kingdom, defending against waves and combat.
Tower DefenseStrategyCity BuilderMinimalistMedievalActionAction RTSBase BuildingBuilding3D👍 23,022Kingdoms and Castles
Jul 20, 2017 · Lion Shield, LLC
Both: Colony Sim · Resource Management · Base Building
Isometric 3D fantasy city builder simulation, stylized low-poly. Building cities and castles, managing resources and peasants, defending against raiders and dragons.
City BuilderColony SimResource ManagementManagementSimulationStrategySandboxBuildingBase BuildingEconomy👍 30,337Manor Lords
Apr 26, 2024 · Slavic Magic
Both: Base Building · Historical · Resource Management
Top-down 3D historical strategy city builder, realistic medieval. City building, resource management and conquest.
StrategyCity BuilderSimulationBase BuildingGrand StrategyHistoricalManagementBuildingResource ManagementSandbox👍 77,135Risen Kingdom
Feb 28, 2020 · MyDreamForever, Tazdraperm
Both: Base Building · RTS · Tower Defense
Top-down 2D fantasy RTS settlement management, colorful cartoon 2D. Building settlements, managing resources and defending against zombies.
StrategyIndieBase BuildingRTSTower DefenseZombiesSingleplayer2DCasualFantasy👍 432Stronghold HD (2012)
Oct 21, 2013 · Firefly Studios
Both: Colony Sim · Medieval · Tower Defense
Isometric 2D historical real time strategy, high resolution graphics. Design and build castles, engage in medieval warfare, manage economy.
Real Time TacticsCity BuilderColony SimMedievalBuildingSandboxEconomyTower DefenseBase BuildingRTS👍 8,657Stronghold Legends: Steam Edition
Sep 15, 2016 · Firefly Studios
Both: Colony Sim · Medieval
Isometric 3D fantasy real time tactics strategy. Building castles, commanding mythical beasts and casting spells.
City BuilderReal Time TacticsColony SimSandboxBuildingManagementEconomyMedievalWarMilitary👍 2,302Mindustry
Sep 26, 2019 · AnukenDev
Both: Base Building · Tower Defense · Resource Management
Top-down 2D sci-fi factory-building tower defense RTS, pixel art. Building supply chains, defending core and commanding units.
AutomationBase BuildingTower DefenseResource ManagementRTSStrategyBuildingSandboxMultiplayerCo-op👍 24,689From Glory To Goo
Apr 2, 2024 · Stratagem Blue
Both: Base Building · RTS · Tower Defense
Isometric 3D sci-fi RTS survival colony sim, detailed pixel art. Base building, resource management and defending against waves.
Base BuildingRTSTower DefenseReal-Time with PauseAction RTSResource ManagementColony SimCity BuilderStrategySandbox👍 1,808Age of Empires IV: Anniversary Edition
Oct 28, 2021 · World's Edge, Relic Entertainment, Forgotten Empires, Climax Studios
Both: RTS · Base Building · Medieval
Isometric 3D historical real-time strategy, realistic 3D graphics. Build cities, manage resources and lead troops to battle.
StrategyRTSBase BuildingWarMultiplayerMedievalSingleplayerResource ManagementCity BuilderHistorical👍 72,395