Single-player games like Fortified
Below are 10 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
GRAVHOUNDS
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
GRAVHOUNDS is a 1–4 player co-op action builder. Drop into hostile planets as a pack, build and defend your base in physics-driven mayhem, and extract with everything you can carry before you become alien chow! The longer you stay, the greater the danger... and the rewards.
- 2
MannyTD
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Manny TD is a hybrid tower defense and third-person shooter with random in game elements. Join and get your personal high score!
- 3
Blinding Light
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
A cooperative action tower defense and third-person shooter where vision is mutually exclusive. Place towers to shine light on the endless horde of bugs, or use augmented vision to fight alongside defenses. Equip powerful modules that unleash your strategy's true potential!
- 4
Sanctum 2
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
- 5
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.
- 6
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.
- 7
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!
- 8
X-Morph: Defense
Single-player alternative to Fortified — playable solo, no multiplayer required. Shares Action and Strategy with Fortified.
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
- 9
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.
- 10
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.