Single-player games like Star Seed Protocol
Below are 8 single-player Steam games similar to Star Seed Protocol, 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 Star Seed Protocol page.
Ranked picks
- 1
PactSworn
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Fight through hordes of eldritch monsters to purge the source of the corruption! Earn gold, buy weapons, and level up to create unique and powerful builds to cut through the chaos. Unlock different warlocks and weapon sets to explore all the different ways to play!
- 2
Bait Soul
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Bait Soul is a top-down Dungeon Crawler Roguelike. It blends dungeon exploration with Survivors-style auto-attacks. Accessible yet deep, it retains the thrill of looting, with unique, game-changing mechanics hidden everywhere.
- 3
Lethal Justice
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Fight waves of criminals, mutants and cyborgs while upgrading your firepower. Restore order in this dystopian city of the future where your choices determine whether you gain the upper hand or succumb to the streets. You are outnumbered, not outgunned.
- 4
Potassium Poisoning
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Potassium Poisoning is a post-apocalyptic survivor game. Where you play as a monkey fighting off radioactive hoards, defeat monsters and complete objectives to earn DNA points, unlocking new mutations and traits to better help you fight and survive.
- 5
Voidrend
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
A 3D arena survivor-like for 1–4 players. Mow down swarms, evolve one of four weapons into a screen-clearing build, and topple towering multi-phase bosses across five biomes — then reclaim the rising Void, where the floor is the boss.
- 6
Bringers of Darkness
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Fight for the forces of darkness in a fast-paced bullet heaven survivors-like. Become a champion of darkness, master unique abilities, and bring ruin to the kingdoms of light that created their own nightmares.
- 7
N.E.O.N. HORIZON
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
Survive 100 perilous waves in a sci-fi roguelite shooter where every decision transforms your ship. Upgrade its systems, discover powerful relics, create unique synergies, and uncover the mystery awaiting you at Horizon.
- 8
The Serpent and the Crow
Single-player alternative to Star Seed Protocol — playable solo, no multiplayer required. Shares Action with Star Seed Protocol.
A dark survivor-like with brutal depth. Choose your origin, forge your build, and drag the truth from a tavern that drifts through the endless dark.