Single-player games like Nebula Live: Galactic trials
Below are 8 single-player Steam games similar to Nebula Live: Galactic trials, 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 Nebula Live: Galactic trials page.
Ranked picks
- 1
Chronos Bound: How We Became Heroes
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action and Indie with Nebula Live: Galactic trials.
Pilot a lone ship through a collapsing orbital station in a modern 2.5D shoot ’em up. Block bullets with a 360° directional shield, destroy grotesque wreck-born enemies, defeat colossal bosses, and build new upgrade paths with every run — a love letter to classic shoot ’em ups.
- 2
VectaGuard
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action and Indie with Nebula Live: Galactic trials.
Arcade-inspired shmup action where neon vector caverns explode with modern visuals, dynamic music, weapon upgrades and intense score chasing.
- 3
Void Operators
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action with Nebula Live: Galactic trials.
Void Operators is a shooter and arcade game combining run-and-gun and beat-'em-up gameplay in a dark and brutal sci-fi universe. Blast the Voidemons, seal the rifts from which they emerge, and prove that you deserve your place among the elite protectors of humanity.
- 4
Celtreos
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action and Indie with Nebula Live: Galactic trials.
1-2 players, game controller support. NO in-app purchases. Over 45 minutes of music! 13 detailed stages, partly-random, with bosses. Tons of weapons, guards and special moves. Play in a window or in Full Screen.
- 5
Louloudi Asteri ~Save the Solar System~
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action with Nebula Live: Galactic trials.
Switch between two fighter aces in this 3D side-scrolling shooter! Roll your ship to rotate the screen, revealing gaps in enemy fire and terrain. Life regenerates over time, and the frontal shield blocks all fire. Lock on, use special weapons, and sidestep through 3D space to save the solar system!
- 6
Throst
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action and Indie with Nebula Live: Galactic trials.
Throst is a 2D-retro-arcade-action adventure about precision flying under constant gravity. Dive through tight tunnels, outmaneuver and destroy defenses. Grab the enemy’s energy orbs, and blast your way back to orbit before you’re crushed or shot down.
- 7
Guntech 2
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action with Nebula Live: Galactic trials.
Guntech 2 is a return of the good old “cave flyer” shoot ’em ups genre. It’s a twin-stick shooter influenced by such classics as Thrust, Oids, Geometry Wars, and Asteroids. You can play in single-player, or couch co-op with up to 4 players!
- 8
Astral Bounty
Single-player alternative to Nebula Live: Galactic trials — playable solo, no multiplayer required. Shares Action and Indie with Nebula Live: Galactic trials.
Astral Bounty is a demanding 2D arcade side-scroller straight out of the ’90s. Blast through hand-built enemy waves, hunt four bounties, earn credits and blow them on beefy upgrades in the shop. You’re going to need them. 3 difficulty levels, 4 ships, mercy optional.