Single-player games like Block Fortress 2
Below are 10 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

Executive Assault 2
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
- 2

Castle Craft
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Will your castle survive the relentless onslaught, or collapse under pressure? Build, manage resources, and outsmart your foes in a world where everything can be destroyed. Use strategy and creativity to turn the chaos into your greatest advantage!
- 3

Dig or Die
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.
- 4

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?
- 5

The Riftbreaker
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 6

Sanctum
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
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.
- 7

Meet Your Maker
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Meet Your Maker is a building game of brutal expression and conquest. Unleash your inner evil genius in co-op or single-player to build the ultimate fortress of devious deathtraps, or take on those built by others in a high-stakes heist to steal resources essential for your survival.
- 8

Outpost: Infinity Siege
Single-player alternative to Block Fortress 2 — playable solo, no multiplayer required. Shares Action and Strategy with Block Fortress 2.
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.
- 9

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!
- 10

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!