Single-player games like Slimeball Castle Wars
Below are 8 single-player Steam games similar to Slimeball Castle Wars, 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 Slimeball Castle Wars page.
Ranked picks
- 1

Lord Wars
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
No tedious fog of war. Outwit foes with terrain ambushes and shifting weather, build elite armies and wrap up intense medieval RTS matches quickly.
- 2

Orders Of The Ruler
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
Experience the thrill of a medieval RTS like never before. With 9 maps to conquer every battle is unique and challenging. Build your base and manage your resources wisely to outsmart your opponents and emerge victorious. Every move you make is crucial in this immersive experience.
- 3

Periculum
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy and Casual with Slimeball Castle Wars.
Periculum is a casual strategy game about conquering hexagonal tiles. Choose from many different game modes and maps or create your own unique levels. Engage in epic battles against up to 7 bots or challenge your friends to see who comes out on top. With plenty of unique options to choose from.
- 4

坍塌世界
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
"Collapsing World" is an innovative tower defense game blending deck-building and roguelike mechanics. Recruit unique companions, craft powerful skill decks, and tackle randomized stages. Deep strategy breaks the traditional TD mold—every run is a fresh challenge!
- 5

绛河之上 Under Supernova
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
An instant strategy science fiction simulation survival sandbox game. Players can control individuals, teams, and manage multiple bases. Players can farm, build, excavate, fight, produce, graze, explore, trade, record and pass on knowledge, and can also fly a spaceship to explore the starry sky.
- 6

Age of Empires II: Definitive Edition
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
42 Civilizations, 229 Campaign Missions, Singleplayer, Co-Op, Multiplayer, In-Game Editor, Mods, Cross-play...It is good to be the king.
- 7

Tiny Troops
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
Tiny Troops is a real-time strategy game set in a medieval fantasy world. Command a squad of customizable units, make fast decisions, and progress through a roguelite campaign across short and intense missions.
- 8

Age of Empires III: Definitive Edition
Single-player alternative to Slimeball Castle Wars — playable solo, no multiplayer required. Shares Strategy with Slimeball Castle Wars.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.