Free games like Frontier Control : Invasion
Below are 9 free-to-play Steam games similar to Frontier Control : Invasion, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Frontier Control : Invasion page.
Ranked picks
- 1

The Riftbreaker: Prologue
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window. Shares Strategy with Frontier Control : Invasion.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 2

Nazi Zombies
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window.
Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.
- 3

Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window.
Rainbow Six® Siege is the reference in tactical team shooters, where elite strategy and execution triumph. Enjoy free access to Quick Match, Unranked, and Dual Front game modes with a selection of operators.
- 4

Muck
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window.
Muck is a survival-roguelike. Collect resources, find items & build a base to survive for as long as you can.
- 5

PlanetSide 2
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
- 6

Minion Masters
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window. Shares Strategy with Frontier Control : Invasion.
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
- 7

Bloons TD Battles 2
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window. Shares Strategy with Frontier Control : Invasion.
From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!
- 8

Age of Empires III: Definitive Edition
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window. Shares Strategy with Frontier Control : Invasion.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.
- 9

Diplomacy is Not an Option: Shareware
Free-to-play alternative to Frontier Control : Invasion — no purchase or trial window. Shares Strategy with Frontier Control : Invasion.
Diplomacy is Not an Option: Shareware is a free prequel to the original game. In a medieval fantasy world, you are to build settlements, raise huge armies, and defend against massive hordes of enemies. Learn how Ironbrow clan shaped the world's map the first time - if you survive, that is.