Single-player games like Interstellar Sentinel
Below are 8 single-player Steam games similar to Interstellar Sentinel, 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 Interstellar Sentinel page.
Ranked picks
- 1
A2 Zygon
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
A bullet hell with its own set of mechanics and unique bosses. Gameplay oriented and retro themed. Complete with spine-tingling music.
- 2
Dire Vengeance
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Pandora ventures into the Dark Realm to slay the demons who threaten her world. Collect Soul Orbs to upgrade your abilities and uncover arcane weaponry. Slash your way through frozen wastelands, lava filled chambers, and caverns of putrefying flesh as you slaughter hordes of condemned monstrosities.
- 3
Skyfire Embers
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Skyfire embers is an explosive dragon adventure seeking its final resolution. Dodge, weave and fire your way through challenging bullet patterns in this hand-animated shoot ‘em up!
- 4
Hellfish
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Hellfish is a classic side-scrolling shoot 'em up set deep in a corrupted ocean. Battle demonic sea creatures as The Pope using his holy submarine, and customize your righteous weapons in unique ways every time you play.
- 5
Ghosts 'n Goblins Resurrection
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action with Interstellar Sentinel.
Watch as this nostalgic yet completely reimagined storybook world unravels before your very eyes. Taking cues from both Ghosts 'n Goblins and Ghouls 'n Ghosts and giving birth to something entirely new, Resurrection is a title worthy of its name.
- 6
Dungeon Killer
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Dungeon Killer is a fast-paced boss rush shoot ’em up where you play as Astrid, a woman determined to bargain for her husband’s resurrection with the goddess of death herself. Armed with a minigun, you’ll descend into an infernal dungeon and face deadly, unsettling female enemies.
- 7
Project Warlock
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Project Warlock is a first-person shooter that fans of Doom, Hexen, and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells, and monsters. Battle through 60 levels of non-stop action, packed with bloodthirsty enemies and challenging bosses.
- 8
Bloodshed
Single-player alternative to Interstellar Sentinel — playable solo, no multiplayer required. Shares Action and Indie with Interstellar Sentinel.
Bloodshed is a Roguelite Survivors FPS; an exhilarating fusion of Roguelite elements merged with retro-styled visuals and first-person “Survivors-like” frenetic combat action!