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

Never Be Alone
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
Never Be Alone is an open-world zombie survival game for solo play and seamless co-op. Explore a world reclaimed by nature, protect a fragile safezone, and uncover the truth behind your forgotten past 10 years after the outbreak.
- 2

Dead Alone
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
Dead Alone is an intense first-person survival shooter set in a dangerous apocalyptic cityscape. In this desolate landscape, your precision in shooting and meticulous resource management will be the key to survival.
- 3

Aftertime
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
Experience an epic journey across utterly mutated yet picturesque world caused by a fallen meteorite that released unknown toxins to the atmosphere. In this new age, humans have become zombies and once again, dinosaurs roam the earth. Giant mushrooms and massive creatures are sights to behold.
- 4

Barricade
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action with Relentless Impetus.
Barricade is a wave-based zombie FPS with a 90s aesthetic. Use physics props to build barricades and defend against zombies. Balance building, shooting, and repairs while spending money on weapons, upgrades, and defenses.
- 5

After the Fall®
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
From the team that brought you Arizona Sunshine® comes an epic VR action FPS with intense co-op gameplay at its core. Team up with friends and take on a hostile VR world filled with ferocious undead--mutated and twisted by the relentless cold.
- 6

Scraps Of The Machine
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
FPS Mech Action! Pilot a mass of steel through a single player campaign set in a desolate landscape. Target enemy armor or weapons to wear them down piece by piece, find upgrades to improve your mech or change its loadout, and survive in a world of rust and decay. Discover, Destroy, Scavenge.
- 7

Medals Of Valor: Last Stand
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
A retro WW2 FPS with PSX-style graphics inspired by classic shooters. Fight online with up to 24 players or play fully solo against smart bots across several maps.
- 8

John Carpenter's Toxic Commando
Single-player alternative to Relentless Impetus — playable solo, no multiplayer required. Shares Action and Adventure with Relentless Impetus.
Pick a character and team up with three friends ‘cause it’s time to save the world. Experience intense FPS action as you obliterate hordes of terrifying monsters! You may not be on the best team of mercenaries, but you are… a Toxic Commando!