Single-player games like IMM Defense
Below are 13 single-player Steam games similar to IMM 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 IMM Defense page.
Ranked picks
- 1
IMM Defense 2
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
This is a very beautiful two-way fluorescent tower defense game.
- 2
Roman Empire vs. Barbarians
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
Barbarians keep expanding all over the place and you’ve been summoned as the hero who’s going to stop them. You’re provided with a Roman Empire tower that comes with a powerful catapult and a team of warriors. Will that be enough to stop the barbarian invasion?
- 3
Ultimate Protector
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Strategy and Indie with IMM Defense.
Tired of moving around without purposes? Come and protect the goddess with multiple combination of skills and elements. Discover and upgrade your weapon to super, even hyper! Play this game with a joy from both tower defense and rogue!
- 4
Bloodsports.TV
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
Co-Op Hero Defense set in a deadly post-apocalyptic Sweden. Team up with your friends and protect the Missile Silo against horrific beasts and outlaws.
- 5
Cluckmech Oasis
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
Cluckmech Oasis, a top-down shooting Roguelike tower defense game. Play as the Warcluck and lead your team of animal heroes in a fight for survival. Collect, build and upgrade defenses, and engage in intense battle against waves of plant enemies.
- 6
Freaking Meatbags
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
Land on a planet, pick up some rocks, leave before the solar system explodes. Oh, and don't die in the nightly robot attacks! Freaking Meatbags is a humorous real-time strategy game that's all about building a base, mixing meatbag DNA, then convincing those dolts to help you gather resources.
- 7
Prime World: Defenders
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Strategy and Indie with IMM Defense.
Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
- 8
Dig or Die
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
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.
- 9
Survival Space: Unlimited Shooting
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Indie with IMM Defense.
This is an interesting shooting game. You need to use a variety of weapons to attack the enemy and survive.
- 10
Stick to the end
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
This is a well-optimized vertical plane shooting game. In this game you can use a wealth of weapons to attack enemy planes and bosses.
- 11
Vinios
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
This is a remake of the vertical shooting version of the aircraft in 2022. And this version has added many elements of color illusion.
- 12
Break Through The Illusion
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
"Break Through The Illusion" is a dungeon barrage shooting game. The protagonist Mick needs to try to pass one room after another, make full use of the specific weapons and limited bullets in his hand to kill the monsters in these rooms, in order to reach the boss room for the final battle.
- 13
Infinity War Land
Single-player alternative to IMM Defense — playable solo, no multiplayer required. Shares Action and Strategy with IMM Defense.
"Infinity War Land" is a pixel-style Roguelite game that combines exciting shooting gameplay, strategic weapon upgrades and dungeon exploration elements.