Free games like Alien Marauder
Below are 9 free-to-play Steam games similar to Alien Marauder, 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 Alien Marauder page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Alien Marauder — no purchase or trial window.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Landfall Archives
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Strategy with Alien Marauder.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 3
Outpath: First Journey
Free-to-play alternative to Alien Marauder — no purchase or trial window.
Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!
- 4
The Riftbreaker: Prologue
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Strategy with Alien Marauder.
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.
- 5
Supermarket Together
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Simulation with Alien Marauder.
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!
- 6
Fallout Shelter
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Simulation with Alien Marauder.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
- 7
My Singing Monsters
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Simulation with Alien Marauder.
Dive into the Musical World of My Singing Monsters! Breed them, feed them, listen to them sing! Breed & collect a menagerie of Monsters, each a living instrument! Build your paradise across 35+ Islands, customize your world, and enjoy endless music! There's never a dull moment in the Monster World!
- 8
Minion Masters
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Strategy with Alien Marauder.
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!
- 9
The Wall
Free-to-play alternative to Alien Marauder — no purchase or trial window. Shares Strategy with Alien Marauder.
[Servers Temporarily Shut Down!] Build. Gather. Breach. The Wall is a never-before seen mix of genres, where dynamic maps, slick combat, base building, and economy management all come together.