Single-player games like Castles II: Siege & Conquest
Below are 12 single-player Steam games similar to Castles II: Siege & Conquest, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Castles II: Siege & Conquest page.
Ranked picks
- 1
Castles
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Design and build your own castle and defend it in real-time battle.
- 2
Age of Empires II: Definitive Edition
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
42 Civilizations, 229 Campaign Missions, Singleplayer, Co-Op, Multiplayer, In-Game Editor, Mods, Cross-play...It is good to be the king.
- 3
Stronghold: Warlords
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Besiege Great Khans, Imperial warlords and Shōgun commanders in Stronghold: Warlords, the latest 'castle sim' from Firefly Studios. Command AI warlords across the battlefield as you build a castle economy and new gunpowder-fuelled siege engines!
- 4
Stronghold Crusader HD (2012)
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
The highly anticipated sequel to the best-selling Stronghold, Stronghold Crusader HD throws you into historic battles and castle sieges from the Crusades with fiendish AI opponents, new units, 4 historical campaigns and over 100 unique skirmish missions.
- 5
Empires Apart
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
An exciting free-to-play Real Time Strategy game set in medieval times. Uniquely designed factions, customization options, singleplayer and multiplayer gameplay. Gather resources, raise an army and lead your civilization to victory in a classic RTS, brought to the modern age.
- 6
Age of Empires® III (2007)
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Microsoft Studios brings you three epic Age of Empires III games in one monumental collection for the first time.
- 7
Polaris Sector
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.
- 8
Age of Empires II (Retired)
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Age of Empires II has been re-imagined in high definition. With the release of Age of Empires II: Definitive Edition, this product will not be updated further.
- 9
Age of Empires: Definitive Edition
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Age of Empires, the pivotal real-time strategy game that launched a 20-year legacy returns with modernized gameplay, all-new 4K visuals, 8-person multiplayer battles and a host of other new features. Welcome back to history.
- 10
Master of Orion 3
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Experience first-hand the challenges of leading one of 16 different races into unequalled galactic supremacy and face a universe of decisions. Set policies, explore, build, declare war, negotiate - put all these elements into motion to guarantee your place in the annals of space and time.
- 11
Conquest of the New World
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy with Castles II: Siege & Conquest.
Discover the uncharted during the Age of Exploration in this strategy game of exploration, combat and colony management.
- 12
Invictus: In the Shadow of Olympus
Single-player alternative to Castles II: Siege & Conquest — playable solo, no multiplayer required. Shares Strategy and RPG with Castles II: Siege & Conquest.
Caught in a bitter feud between spiteful gods, you fight for more than your life in this strategy RPG. Enlist Hercules, Achilles, Electra and the mightiest of heroes in your struggle for an eternal seat atop Olympus. Create your own war host from over 30 distinct units.