Single-player games like IDUN - Frontline Survival
Below are 10 single-player Steam games similar to IDUN - Frontline Survival, 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 IDUN - Frontline Survival page.
Ranked picks
- 1

Taur
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Action and Strategy with IDUN - Frontline Survival.
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
- 2

Minimalist Tower Defense
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy and Indie with IDUN - Frontline Survival.
Collect resources and establish a defense line before dark And then Facing countless enemies
- 3

Tower Dominion
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy with IDUN - Frontline Survival.
Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!
- 4

Border Pioneer
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Action and Strategy with IDUN - Frontline Survival.
As the kingdom's most promising pioneer, embark on a legendary journey to tame the frontier! Build thriving towns across various landscapes, fending off waves of diverse enemies until you establish a firm foothold and have explored everything the eye can see!
- 5

The Riftbreaker
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Action and Strategy with IDUN - Frontline Survival.
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

From Glory To Goo
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy and Simulation with IDUN - Frontline Survival.
From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.
- 7

Calyx
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy with IDUN - Frontline Survival.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 8

Age of Darkness: Final Stand
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy with IDUN - Frontline Survival.
Age of Darkness: Final Stand is a dark fantasy survival RTS where you must illuminate, build and defend humanity’s last bastion against hordes of Nightmares. Set in the remnants of a kingdom consumed by a deadly fog, you decide. Will you hide in the light? Or take back your world.
- 9

Creeper World 4
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Action and Strategy with IDUN - Frontline Survival.
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.
- 10

IDUN Prologue - Frontline Survival
Single-player alternative to IDUN - Frontline Survival — playable solo, no multiplayer required. Shares Strategy and Indie with IDUN - Frontline Survival.
Step into the arena with IDUN: Prologue, a thrilling slice of our full-length defense RTS where real-time strategy meets rogue-lite chaos. Fight your way through unique mission objectives with overwhelming swarms of enemies.