Single-player games like Upload Aliens
Below are 9 single-player Steam games similar to Upload Aliens, 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 Upload Aliens page.
Ranked picks
- 1
Nion Forge
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Nion Forge is a blend of roguelite gameplay and modular shipbuilding, set in a stylish cyberpunk world. By carefully selecting the right modules, you'll have a chance to conquer all 9 districts of the city, defeat their district bosses, and attain your freedom.
- 2
Katanaut
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Katanaut is a fast-paced, Metroidvania-inspired action roguelite blending fluid combat and cosmic horror. Slash, dodge, and wield powerful abilities as you battle through a station sprawling with twisted, once-human horrors. Adapt, survive, and descend into the shadows to uncover dark secrets.
- 3
Hellbrella
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Put on your raincoat and destroy hordes of demons in Hell. Use 5 insane umbrellas in an aerial roguelite hack and slash of pure chaos!
- 4
Star Fire: Eternal Cycle
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Star Fire is a love letter to classic arcade side-scrollers, reimagined with roguelite progression, modern action polish, and that “just one more run” itch. It’s fast, punchy, and all about no-pressure fun with tight combat, slick movement, and endless ways to cause chaos.
- 5
Roboquest
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Roboquest is a fast FPS Roguelite in a scorched futureworld. You're a rebooted Guardian, ready to kick some metal ass! Fight with your buddy or by yourself and annihilate hordes of deadly bots in ever-changing environments.
- 6
Ion Fury
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!
- 7
Absolum
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Fight as the outcast heroes of Talamh in a fierce battle to retake magic from Sun King Azra’s grasp in Absolum, an original roguelite beat ‘em up by Dotemu.
- 8
UNYIELDER
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
UNYIELDER is an intense Boss-rush Movement-FPS. Assemble your arsenal of destruction, smash your way through waves of bosses, face your own Final-Boss.
- 9
Hollow Jump
Single-player alternative to Upload Aliens — playable solo, no multiplayer required. Shares Action and Indie with Upload Aliens.
Craving the thrill of a challenging platformer, but tired of endless frustration and failure? This game strips away the stress and leaves only fast-paced, satisfying action! Soar through the air with stylish jumps and dashes, and freely explore a breathtaking world where steampunk meets fantasy!