Single-player games like Prime Directive
Below are 9 single-player Steam games similar to Prime Directive, 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 Prime Directive page.
Ranked picks
- 1
Star Control®: Origins
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Adventure with Prime Directive.
Star Control is a space role-playing game in which you command Earth's first interstellar starship on a mission to save the Earth from hostile alien empires.
- 2
MeowGun: Hell Denizen
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
A fast paced silly cutegore FPS! Earth has been taken over by demons. A catgirl codenamed MeowMeow fights back! MEOW, GUN, CLAW and BLOW UP hordes of evil demons, zombies, and other monsters in colorful environments with tons of weapons! The game runs on the FTEQW engine.
- 3
Serious Sam HD: The First Encounter
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!
- 4
STAR WARS™: Battlefront Classic Collection
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action with Prime Directive.
Play the classic STAR WARS™ Battlefront games, online and offline in this definitive collection.
- 5
Black Mesa
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
Relive Half-Life.
- 6
Serious Sam 3: BFE
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
- 7
Cobalt
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
Forget everything you’ve learned about combat. Cobalt’s slo-mo mechanic lets you perform moves that other games can’t comprehend. Discover the secrets of a distant colony in a cosmic campaign, take on challenges and rule the leaderboards, or face off against others in local and online multiplayer.
- 8
Vertigo 2
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Action and Indie with Prime Directive.
Vertigo 2 is a single-player VR adventure. Explore the depths of the vast Quantum Reactor as you descend to finish your journey home.
- 9
Marty Thinks 4D
Single-player alternative to Prime Directive — playable solo, no multiplayer required. Shares Indie with Prime Directive.
Marty Thinks 4D is an isometric 3D puzzle platformer where you play as a small robot on a journey to find his creator. With the aid of time travel, Marty is able to step into the past and work together with past versions of himself to overcome any challenge.