Single-player games like Alien Up
Below are 8 single-player Steam games similar to Alien Up, 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 Up page.
Ranked picks
- 1
Boom Blaster
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
Boom Blaster is a hand-drawn, side-scrolling shoot'em up with intense boss fights! Blast your way through each level with a range of weapons and unique hero abilities in this exciting and challenging action game.
- 2
Space Adventure Cobra - The Awakening
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
Play as Cobra, the space pirate, in an action platformer. Along with Lady Armaroid, your loyal partner, and equipped with your iconic Psychogun, you must solve a mystery that could threaten the entire universe.
- 3
Neckbreak
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
An overdose of reality can have dire consequences... Tumble down the rabbit hole and embrace your downfall with 12 endings, non linear day by day progression, sanity system and more...
- 4
Hitler is My Crush: Love and Fascism
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
Hitler is My Crush: Love and Fascism is a crazy love story that defies logic, common sense and everything you knew about the world. You play as a girl madly in love with... Hitler.
- 5
ANNO: Mutationem
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
ANNO: Mutationem is an action-adventure game with RPG elements set in a cyberpunk world, featuring a unique mix of pixelated 2D & 3D graphic style with a rich, dark and bizarre plot.
- 6
MotionRec
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
MotionRec is a recording puzzle action game where you progress through stages by recording and playing back your own movements.
- 7
LUNARK
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
A pixel-art sci-fi adventure set in the midst of a rebellion against a totalitarian regime, LUNARK is a modern take on the 2D cinematic platformer genre of the '90s. Run, jump, hang, climb, roll, and shoot your way through gorgeous and mysterious locations!
- 8
Warhammer 40,000: Shootas, Blood & Teef
Single-player alternative to Alien Up — playable solo, no multiplayer required. Shares Action and Adventure with Alien Up.
From the developers of the Guns, Gore and Cannoli franchise comes a new 2D run & gun platformer: Warhammer 40,000: Shootas, Blood & TEEF! Spearhead an Ork invasion, destroy the hive city and kill your warboss! ‘Ere we go!