Single-player games like illWill
Below are 15 single-player Steam games similar to illWill, 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 illWill page.
Ranked picks
- 1
UBERSLAUGHTER
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
DOPAMINE - NON STOP KILLING - BLOOD - BUNNY HOPPING - HIGH SKILL CEILING - MORE BLOOD - NO HAND HOLDING - STOCK TRADING - EVEN MORE BLOOD - ODDLY SENSUAL
- 2
FLESHCANCER
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action with illWill.
FLESHCANCER is a Fast-paced Boomer Shooter with surreal environments and old-school violence. Fight cannibal cultists, terrorists, grotesque aberrations and more. MAKE IT RAIN FLESH, ORGANS, AND BLOOD LIKE NEVER BEFORE.
- 3
Dimenshot
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Dimenshot is a melee-focused boomer shooter FPS set in distinct worlds, each representing one of the Seven Deadly Sins with its own unique theme. Melee combat is central, ranged weapons are supportive. Play fast and aggressive; combine parkour with combat.
- 4
AMID EVIL
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
A retro FPS for the ages! Once branded a HERETIC. Now YOU have been chosen as our champion! Reclaim our sacred weapons. Take back our ancient lands. If you can stand... AMID EVIL.
- 5
KINGDOM of the DEAD
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Immerse yourself in a dreadful hand-drawn horror world and push Death’s armies back to the underworld!
- 6
Devilated
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Devilated is an ultraviolent RPG old-school shooter where you brutalize and cannibalize your demonic foes in equal measure. Eat their face before they eat yours.
- 7
Forgive Me Father
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Forgive Me Father is a dark retro horror FPS set in a comic book style world inspired by the novels of H.P. Lovecraft. As the only one left with full senses, you begin a journey in search of answers and relief. How long can you last?
- 8
Splatter
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Splatter is a first-person fever dream where you blast constantly-adapting enemies into neon sprays of pulp and slime. Enter a digital mindscape constructed by four anonymous administrators. Can you survive? Can you remain sane? Can you remain yourself?
- 9
Turbo Overkill
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Enter Paradise as Johnny Turbo—half-metal, half-human, all-murder machine. Clean up the streets with a chainsaw leg, 15+ weapons and your hovercar as you battle the rogue AI Syn, rival bounty hunters and cyberpunks aplenty. Apogee’s most outrageous FPS since Duke Nukem 3D. Good hunting, Sir!
- 10
Quake
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action with illWill.
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
- 11
Serious Sam 4
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
- 12
DOOM
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action with illWill.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
- 13
DUSK
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
Battle through an onslaught of mystical backwater cultists, possessed militants & even darker forces as you attempt to discover just what lurks beneath the Earth in this retro FPS inspired by the '90s legends.
- 14
Ion Fury
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!
- 15
Rabbit Story
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Indie with illWill.
Rabbit Story is an adventure game that offers a unique play experience: simple in controls and appealing to feelings. Its dramatic plot tells the player about relationship breakup and struggles, doubts and fears related to it.