Single-player games like Block Fortress 2
Below are 12 single-player Steam games similar to Block Fortress 2, 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 Block Fortress 2 page.
Ranked picks
- 1

Astronaut Assault
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Dive into Astronaut Assault, a third-person Sci-Fi tower defense game, and battle against relentless enemy waves in diverse arena settings. Arm yourself with an array of turrets, traps, and gadgets to halt, hinder, and outmaneuver your foes.
- 2

Galactic Disharmony
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
A Sci-fi First-person shooter and Strategy game. Command and control your fleets and planets, build troops and extract resources in the solar maps' turn-based strategic mode. Then head into battle with your troops in large-scale first-person warfare to conquer planets.
- 3

GROSS
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
GROSS is a unique twist on the classic tower defense genre. After building your defenses, you will jump into the action to take on enemies head-on. Make sure to collect as much cash as possible to upgrade your defenses and stay ahead of the game. Can you outlast the waves of enemies?
- 4

Deadly Dozen: Pacific Theater
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Penetrate the island strongholds of Japanese Imperial forces with your squad of commandos in this tactical World War II first person shooter. Stealth, a cool head and your M1 may buy you one more day. Can you survive the hard-edged intensity of the Pacific theater?
- 5

Band of Defenders
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action with Block Fortress 2.
A Co-Op FPS game with base building in a post-apocalyptic world. Craft weapons, build barricades and automated turrets, unlock new gear and items for visual customization and kill all savages and mutants trying to destroy the remnants of human civilization.
- 6

Blood Waves
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Hardcore and bloody shooter where you will have to repel the attacks of the living dead using the destroying traps, defensive barricades and also weapon of close and long-range combat.
- 7

Out of Ammo
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Out of Ammo is an intense VR Tower Defense / FPS hybrid strategy game that will have you constructing defenses, calling in artillery, issuing orders, and taking direct control of your soldiers in order to survive a relentless enemy onslaught.
- 8

McDROID
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Farm, Build, Defend, in the Galaxy's only Arcade-Tower-Defense.
- 9

Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.
- 10

Minecraft Legends
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Discover the mysteries of Minecraft Legends, a new action strategy game. Explore a gentle land of rich resources and lush biomes on the brink of destruction. The ravaging piglins have arrived, and it’s up to you to inspire your allies and lead them in strategic battles to save the Overworld!
- 11

War Tortoise
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action with Block Fortress 2.
War Tortoise is a new type of hybrid idle game, taking core incremental gameplay and adding new features, idle elements, and advanced graphics. Explore, command and upgrade, equip weapons and armor, level up, unlock abilities, recruit heroes and pilots, and more!
- 12

Bug Heroes: Tower Defense
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Help the Bug Heroes defend their food stash from hordes of enemies! Control powerful heroes, build your defenses, level up your heroes and towers, equip upgrades, and more!