Single-player games like SuperSubmarine
Below are 8 single-player Steam games similar to SuperSubmarine, 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 SuperSubmarine page.
Ranked picks
- 1

Metal Crisis
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
METAL CRISIS is a side-scrolling shoot 'em up inspired by 3D space shooters of the 90s. Pilot the most advanced ship Earth has created capable of acquiring enemy weapons as you battle through hordes of fighters and hulking bosses in it's war against the space colonies rebellion.
- 2

Project Neon
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
Blast through enemy defenses in this intense 16-bit shoot ‘em up (or shmup), dismantling interplanetary shields to bring humanity’s last hope back from Mars and save Earth from ecological collapse.
- 3

Dungeon Killer
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
Dungeon Killer is a fast-paced boss rush shoot ’em up where you play as Astrid, a woman determined to bargain with the goddess of death herself to resurrect her husband. Armed with a minigun, you’ll descend into a hellish dungeon and face deadly, disturbing female enemies.
- 4

Flying Pigs
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Casual with SuperSubmarine.
Your plane is on fire, you're wounded, but don't give up! You are the last hope to end World War II! Six pilots with a devastating arsenal! Face the hell of the skies in single-player or co-op, survive breathtaking battlefields, and obliterate colossal bosses in this fast-paced shooter!
- 5

Archaea Ascent
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
Undergo trials, build your identity, build a team, build your skills, fight the system. The operators are watching — and the directives are getting harder to follow.
- 6

Godspeed Gunslinger
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
Fast-paced run-n-gun action platformer with a heavy emphasis on momentum and speed. Are you a bad enough dude to rocket jump and shotgun blast your way to the top of the TOWER OF THE DYING SUN?
- 7

Internet Survivor Survivors
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
A top-down action roguelite Touhou fangame featuring Flan, who's... started streaming and has taken the internet by storm!? Collect likes and coins to power up your weapons! Your very viewer count becomes your life! Annihilate the constant hordes of enemies and survive, survive, SURVIVE!
- 8

Space War: Infinity
Single-player alternative to SuperSubmarine — playable solo, no multiplayer required. Shares Action and Indie with SuperSubmarine.
Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.