Single-player games like Fortified
Below are 9 single-player Steam games similar to Fortified, 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 Fortified page.
Ranked picks
- 1
Sanctum
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
- 2
Iron Brigade
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
- 3
Block Fortress 2
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, and defend your stronghold against relentless attacks. In this action-packed block-builder, survival is earned, and only the strongest will remain.
- 4
Sol Survivor
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Strategy and Indie with Fortified.
Jump in to intense turret defense action with Sol Survivor! Build turrets to defend your colony and the innocent colonists within. Smash enemies with volleys of actively-controlled orbital support. Play with friends in co-operative and competitive multiplayer matches or test your mettle against our new Survival mode!
- 5
Revenge of the Titans
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 6
Infested Planet
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
- 7
Orcs Must Die! 2
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
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.
- 8
McDROID
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Farm, Build, Defend, in the Galaxy's only Arcade-Tower-Defense.
- 9
Orcs Must Die!
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment.