Single-player games like Hospital Aliens 2
Below are 9 single-player Steam games similar to Hospital Aliens 2, 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 Hospital Aliens 2 page.
Ranked picks
- 1

Foreign Fortress
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Escape from the Alien, find necessary items that allow you to escape and cure the virus, and bring hope to humanity, yourself, and your family.
- 2

Black Mesa
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Relive Half-Life.
- 3

Half-Life: Alyx
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Playing as Alyx Vance, you are humanity’s only chance for survival.
- 4

Crysis
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action with Hospital Aliens 2.
Adapt to Survive An epic story thrusts players into an ever-changing environment, forcing them to adapt their tactics and approach to conquer battlefields ranging from newly frozen jungle to zero-gravity alien environments. Suit up! A high-tech Nanosuit allows gamers to augment their abilities in real time on the battlefield.
- 5

Crysis Warhead®
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action with Hospital Aliens 2.
Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.
- 6

Call of Duty®: Infinite Warfare
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Infinite Warfare delivers three unique game modes: Campaign, Multiplayer, and Zombies.
- 7

Wolfenstein: The Old Blood
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action with Hospital Aliens 2.
Wolfenstein®: The Old Blood™ is a standalone prequel to the critically acclaimed first-person action-adventure shooter, Wolfenstein®: The New Order. This adventure spans eight chapters and features the hallmarks of MachineGames – thrilling action, immersive story, and intense FPS combat.
- 8

Call of Duty®: Black Ops III
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Call of Duty®: Black Ops III Zombies Chronicles Edition includes the full base game plus the Zombies Chronicles content expansion.
- 9

Tokyo School Girl
Single-player alternative to Hospital Aliens 2 — playable solo, no multiplayer required. Shares Action and Adventure with Hospital Aliens 2.
Use Souls-Like combat with a sword, gun, or your hands in this epic Third-Person adventure in the open world city of Tokyo to defeat the powerful ruler named Lion Knight and save your sister who is destined to save the city from destruction.