Free games like UFO: Aftermath
Below are 8 free-to-play Steam games similar to UFO: Aftermath, 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 UFO: Aftermath page.
Ranked picks
- 1

Die in the Dungeon: Origins
Free-to-play alternative to UFO: Aftermath — no purchase or trial window. Shares Strategy with UFO: Aftermath.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 2

South Scrimshaw, Part One
Free-to-play alternative to UFO: Aftermath — no purchase or trial window.
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.
- 3

PlanetSide 2
Free-to-play alternative to UFO: Aftermath — 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.
- 4

Limbus Company
Free-to-play alternative to UFO: Aftermath — no purchase or trial window.
As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.
- 5

Dota Underlords
Free-to-play alternative to UFO: Aftermath — no purchase or trial window. Shares Strategy with UFO: Aftermath.
Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.
- 6

Cell to Singularity - Evolution Never Ends
Free-to-play alternative to UFO: Aftermath — no purchase or trial window.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.
- 7

Toribash
Free-to-play alternative to UFO: Aftermath — no purchase or trial window. Shares Strategy with UFO: Aftermath.
Toribash is an innovative free-to-play online turn-based fighting game where you’re able to design your own moves. Complete control over character's body, hundreds of game mods and bloody mess with full body dismemberment - you've never been able to annihilate your enemies like that before!
- 8

Alien Swarm
Free-to-play alternative to UFO: Aftermath — no purchase or trial window.
Co-operative multiplayer game and complete code base available for free.