Free games like AI War 2
Below are 8 free-to-play Steam games similar to AI War 2, 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 AI War 2 page.
Ranked picks
- 1
Zero-K
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy and Indie with AI War 2.
With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.
- 2
Galcon 2: Galactic Conquest
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy and Indie with AI War 2.
Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!
- 3
Age of Empires III: Definitive Edition
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy with AI War 2.
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.
- 4
Infinitode 2 - Infinite Tower Defense
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Indie and Strategy with AI War 2.
Infinitode 2 - a strategy in the Tower Defense genre, in which the player will have to build towers to protect his base from endless waves of enemies. The game features huge maps, lots of towers, resource miners, upgrade tree and map editor.
- 5
Istrolid
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy and Indie with AI War 2.
In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.
- 6
War of Dots
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Indie and Strategy with AI War 2.
Easy to learn, hard to master. A simple & free RTS game.
- 7
Dota 2
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy with AI War 2.
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
- 8
Empires Mod
Free-to-play alternative to AI War 2 — no purchase or trial window. Shares Strategy with AI War 2.
Unique strategy/first person shooter mix: One commander on each team plays from above, choosing research, placing buildings and giving orders. The rest fill the role of soldiers on the ground, with four distinct classes to choose from and customizable vehicles to drive.