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

HEATSINK
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.
A first-person roguelite where standing still will surely get you killed — this is a fast fps shooter with several mechanics that force you to keep moving and punishes you for staying inert
- 2

Chthonic
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.
Descend through nine ever-changing levels of a living nightmare, master a weapon that grows with you, and face colossal demons to a soundtrack that comes alive as you play.
- 3

Project: Ascent
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.
Become an unstoppable force of destruction as you climb an endless tower of darkness. Project: Ascent is a fast-paced boomer shooter roguelite with retro graphics, insane power-up synergies, and an evolving arsenal of weapons.
- 4

Lunarift
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action with OVERHEAT PROTOCOL.
DESCEND. BUILD. EXTRACT. Lunarift is a single-player roguelite FPS set inside a lunar station torn open by a dimensional rift. Fight through shifting sectors, turn salvaged technology into lethal builds, and choose when to push deeper or escape with what you found.
- 5

Arena 2006
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action with OVERHEAT PROTOCOL.
Sci-fi shooter inspired by the golden '06 era. Forget the waiting queues, microtransactions, 60gb patches. We're here to frag.
- 6

Dead Sector: Rogue
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action with OVERHEAT PROTOCOL.
Dead Sector: Rogue is a fast-paced FPS roguelite. Fight through monster-infested station arenas, combine experimental weapons, active abilities, and powerful perks to create unique builds. Choose one of the pre-built classes or create your own, and adapt your strategy with every run.
- 7

GROUND-UNBOUND
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.
GROUND-UNBOUND is a procedurally generated, high-intensity movement shooter with a retro wave art style. It features roguelike mechanics with a number of skills, guns and abilities to play with, including a variety of enemy types. Created during the 7-Day BigFry Game Jam, updated for steam release.
- 8

Seth
Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.
Become Seth, god of storms, and crush Apophis’s legions in a fast-paced roguelite FPS blending Egyptian mythology with science fiction. Fast combat, random challenges, and divine power in every run.