Single-player games like Protocell
Below are 8 single-player Steam games similar to Protocell, 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 Protocell page.
Ranked picks
- 1
Desmarchon
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
Desmarchon is a chain-weaving survivor-like. Burst drifting Anomalies, build your ship through sixteen Campaign operations, then farm thirty Deep Space destinations. Craft gear, insert Reality Manifolds, and push a shared Depth frontier as far as your build can carry you.
- 2
Scrapstorm
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
A 1-4 player bullet-heaven roguelite where the whole city is hunting you. Draft cards every level until one pistol turns into a screen-clearing mess, and watch out for the traffic, the third rail and whatever is running each district.
- 3
Zero Distance
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
Fight overwhelming zombie hordes in a 3D bullet heaven where packing your case shapes your firepower. Arrange weapons, gear and supplies to unleash fire, lightning and explosive combinations. Survive 20 minutes, defeat the boss and earn your extraction.
- 4
UNIT-5000
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
UNIT-5000 is a top-down extraction roguelite bullet hell where you build a combat mech and fight alien invaders. Experiment with weapons and modules, face hordes and multi-phase bosses, extract resources before a run goes wrong, and use them to unlock deadlier builds for the next fight.
- 5
Iron Frame
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
A bullet-heaven roguelite fought in a single ship. Nine frames, each one rewriting a rule of the run rather than its numbers. Ten guns across forty tiers, ten bosses to break, and a hull that visibly grows with every level. Survive long enough and the swarm stops being the problem.
- 6
Vector Noir
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
Simple geometry twin-stick shooter. It's hard on purpose. I'm still working out what the rest of the game is, so follow the page if you want in when I open the playtest.
- 7
Glintwave
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
A pixel-art bullet-heaven roguelite. Survive 100 waves across wild, distinct areas while stacking weapons, relics, and over 200 Arcana combinations into a screen-filling build. Unlock heroes, talents, and secrets between runs, then push through ten difficulty levels. Full controller support.
- 8
Relicfall
Single-player alternative to Protocell — playable solo, no multiplayer required. Shares Action and Indie with Protocell.
Forge your own class in this Bullet Heaven Action Roguelite. Combine 3 professions to shape a unique skill tree, hunt for powerful loot, and socket relics to create game-breaking synergies. Slay endless hordes and push your build to its limits.