Single-player games like Fort Defense
Below are 16 single-player Steam games similar to Fort Defense, 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 Fort Defense page.
Ranked picks
- 1

Royal Defense
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
The castle needs a hero – hordes of trolls are surrounding it! Build towers, save money, learn spells - don't let the enemy in! Follow the exciting story of the dwarven kingdom's eternal struggle against the troll hordes, who want only to crush the dwarves and claim their territory.
- 2

Day D: Tower Rush
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Onwards to the past! Learn the real power of science! Help the professor and his loyal companion deal with hordes of dinosaurs.
- 3

Iron Sea Defenders
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Man the guns! The enemy fleet is on the horizon! Defend your fort from attacks – show your tactical skill.
- 4

Rogue Waters
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Adventure with Fort Defense.
Rogue Waters is a Pirate Tactical Turn-Based Rogue-lite. Play as Captain Cutter, commanding your ship and crew through procedurally generated encounters to seek revenge. Recruit, train, and upgrade crew, use powerful sea creatures, and engage in dynamic naval and melee combat to gain the upper hand.
- 5

Deathtrap
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Deathtrap is a Tower Defense game with strong action-RPG elements, a game of vicious tricks, killing machines, rotating blades and splattering blood.
- 6

Orcs Must Die! 2
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.
- 7

Windward
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Indie and Adventure with Fort Defense.
Windward is an action-filled multiplayer sandbox game that puts you in control of a ship sailing the high seas of a large procedurally-generated world.
- 8

Space Pirates and Zombies
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
- 9

Medieval Defenders
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Defend your ancestral castle – show the invader who the master is! Build towers, save money, train your spells, and your enemy will be vanquished.
- 10

Gnumz: Masters of Defense
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Adventure with Fort Defense.
An enemy army is at our gates! Build an ideal chain of traps. Use magic and the power of the elements: earth, ice, fire and shadow.
- 11

SC2VN - The eSports Visual Novel
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Indie and Adventure with Fort Defense.
SC2VN is a visual novel about the South Korean StarCraft 2 scene. You play as Mach, a foreign semi-pro trying to make it in eSports who soon learns that success in StarCraft takes more than in-game strategy.
- 12

Gnomes Garden
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Dry summer withered the king’s beloved garden and the surrounding gardens of the kingdom alike. The ruler has fallen ill and the kingdom is in danger. Help the princess save the gardens and make the king better again.
- 13

Alice's Patchwork
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Fort Defense.
Assemble patchwork mosaics while you travel with Alice and the famous characters of Wonderland and Looking-Glass Land
- 14

Alice's Patchworks 2
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Indie and Casual with Fort Defense.
Assemble patchwork mosaics, meet your favorite heroes from the world beyond the looking glass and help Alice become the queen!
- 15

Katy and Bob: Safari Cafe
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Fort Defense.
Katy and Bob: a new chapter in the adventures of Katy and Bob. Head into the safari park and grow your business!
- 16

Mahjong World Contest (麻将)
Single-player alternative to Fort Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Fort Defense.
Join a Mahjong contest. Complete over 100 unique levels to gain experience and points. Improve your rank and progress.