Single-player games like Protobouncer
Below are 10 single-player Steam games similar to Protobouncer, 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 Protobouncer page.
Ranked picks
- 1

SPINDRIVE
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action with Protobouncer.
A sci-fi splitscreen platform fighter. Be the last one standing by collecting upgrade discs and destroying enemies in a procedurally-generated map.
- 2

Frutiverse
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action with Protobouncer.
Frutiverse is a 2D space game driven by orbital physics and a fully simulated environment. Navigate unstable solar systems, manipulate trajectories. Every asteroid can be turned into a weapon of mass destruction, triggering a chain reaction that sends the Solar system into chaos.
- 3

Shadow Slayer
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Early Access with Protobouncer.
Become the ultimate shadow warrior. Master lethal precision, navigate a world consumed by darkness, and fight your way to victory. In Shadow Slayer, every move you make decides your fate. Will you conquer the shadows, or will they consume you?
- 4

Voidpath
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action with Protobouncer.
Top-down space combat roguelike: Blink through bullet storms, stack weapons, items, and synergies, chart four sectors, and face elites, hunters, and capital bosses — ending at the Singularity. Clear a run to unlock Endless. Solo or local co-op; Steam Arena & Versus PvP.
- 5

Master of the Arena
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action with Protobouncer.
An action-packed arena brawler for up to 8 players! Battle in intense rounds. Customize your abilities. Fight to be the last one standing—or team up to take down relentless monsters.
- 6

Endgame: Road To Salvation
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Adventure with Protobouncer.
A high-octane road trip through a besieged world during a demon-infested zombie apocalypse. Rescue survivors, form a caravan, call in various support drops or air strikes, loot random structures for supplies or craft them yourself, modify common vehicles into post-apocalyptic machines of war.
- 7

INTO EVIL
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Adventure with Protobouncer.
Hotline Miami x Dark Souls. Greatswords, demons, miniguns; up to 4 players. You are not prepared.
- 8

BlazBlue Entropy Effect
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Adventure with Protobouncer.
Enjoy action-packed flashy combat with incredibly satisfying combos and responsive controls! Numerous characters, each with completely unique playstyles and loads of unlockable moves & upgrades! This action roguelike sets the bar for fluid fast-paced action.
- 9

Welcome to Neokyo City
Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Adventure with Protobouncer.
In a city governed by drones and powered by neon gas, hope soars through the rooftops in the form of a rogue human. Jump across rooftops, hack powerboxes, and avoid the ever present drones that oppress the citizens of Neokyo City in this open-world 2D platformer.
- 10

Graph Box
Single-player alternative to Protobouncer — playable solo, no multiplayer required.
Graph Box is a math-centric physics-based 2D platformer with metroidvania-esque exploration and progression. Focusing primarily on creativity and experimentation in its slower-paced platforming, it allows you to plan out your route and design unique paths using graphed equations as a core mechanic!