Free games like X-COM: UFO Defense
Below are 8 free-to-play Steam games similar to X-COM: UFO Defense, 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 X-COM: UFO Defense page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
The Lab
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 3
Moonring
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window.
A dark-fantasy, turn-based, retro-fusion of classic turn-based RPGs and roguelikes, all presented with a unique neon aesthetic.
- 4
Lily's Well
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window.
It is a rainy night in the Spring of 2005. Lily is left home alone after her Papa put her to bed. She is awoken by a cry for help outside her window. It is coming from the well. Help Lily gather rope to go down the well and save the poor soul trapped down there.
- 5
Die in the Dungeon: Origins
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window. Shares Strategy with X-COM: UFO Defense.
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!
- 6
South Scrimshaw, Part One
Free-to-play alternative to X-COM: UFO Defense — 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.
- 7
The Riftbreaker: Prologue
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window. Shares Strategy with X-COM: UFO Defense.
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.
- 8
The Last Sovereign
Free-to-play alternative to X-COM: UFO Defense — no purchase or trial window. Shares Strategy with X-COM: UFO Defense.
Explore a world torn between armies of lust and purity in which everything is more complex than it seems, deciding the fate of nations through might, politics, and finance. Every decision matters in an intricate saga that tracks thousands of variables.