Single-player games like Alien X
Below are 16 single-player Steam games similar to Alien X, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Alien X page.
Ranked picks
- 1

PLANET ALPHA
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
PLANET ALPHA, a beautiful alien world filled with mystery and danger. Pursued by relentless enemies, you must harness the power of night and day as you struggle to survive.
- 2

Bionic Bay
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
A scientist uses a unique teleportation instrument to escape an ancient biomechanical world filled with imaginative technology, deadly traps, and hidden secrets.
- 3

Lakeview Cabin Collection
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie with Alien X.
Delve into the diverse world of horror movies in this 2D action puzzler. Nothing can prepare you for the R-rated challenges you will face!
- 4

ElecHead
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
⚡+🤖+🧩
- 5

INSIDE
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Hunted and alone, a boy finds himself drawn into the center of a dark project. INSIDE is a dark, narrative-driven platformer combining intense action with challenging puzzles. It has been critically acclaimed for its moody art style, ambient soundtrack and unsettling atmosphere.
- 6

Oddworld: Soulstorm Enhanced Edition
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Oddworld: Soulstorm is the explosive second game in a brand new Oddworld Quintology that tells the continuing story of Abe and his comrades as they discover further crimes against Mudokonkind and look for the spark that will ignite a revolution.
- 7

LIMBO
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Uncertain of his sister's fate, a boy enters LIMBO
- 8

SYMMETRY
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
A research spaceship reaches an abandoned planet. Nothing is what it seems here and the situation quickly slips out of control. Can the crew manage to survive and get back home?
- 9

Furry Sex
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Adventure and Casual with Alien X.
An erotic memory game with furry characters and explicit illustrations.
- 10

Hentai Big Tits
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Hentai Big Tits - is the simplest 2D puzzle the final goal of which to give you pleasure!
- 11

Furry Orgasm
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Furry Orgasm - is an amazing 2D puzzle with images of furry beauty ladies the final purpose of which to give you some pleasure!
- 12

Battle Cube
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Battle Cube - is really hardcore 2D platformer with surviving elements where you will have to do different levels playing like a cube.
- 13

Smoked Gun
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Smoked Gun - is a hardcore 3D shooter with surviving elements done as DOOM, where you will have to fight against the whole criminal world alone, against mafia.
- 14

Detective Story
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Detective Story - is a simple quest game, with hardoce elements, where you play as a detective Harold. You look for clues, interview witnesses and collect everything to clear a crime.
- 15

STRAY KITTEN
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
STRAY KITTEN - is a short 2D platformer with surviving and hardcore elements where it is described a story about one lost kitten Silver.
- 16

Z.O.M.B.I.E.
Single-player alternative to Alien X — playable solo, no multiplayer required. Shares Indie and Adventure with Alien X.
Z.O.M.B.I.E. - is an unusual 3D shooter with surviving elements where you will have to survive in a zombie apocalypse, playing as a girl named Zoe.