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
ELDRITCH SLAYER
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
ELDRITCH SLAYER is a retro FPS filled with bloodshed and dark humor. You play as a lone killer who ventures into a wicked land corrupted by the Old Ones. Take up your weapons, face the unspeakable horrors, and wipe them all out.
- 3
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.
- 4
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.
- 5
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.
- 6
P WORLD
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action and Indie with illWill.
P World is a Pachinko-Action FPS game. Collect pinballs and shoot them into a gigantic pachinko machine to unleash the power. Drive into cyber world and fire your souls to survive against endless waves of DIGITAL GHOST ™.
- 7
ARCHWIZARD
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action with illWill.
Fast paced "Hyper Shooter" complemented with esoteric exploration experience. Take a quest to become Arch Wizard: dominate surrounding realms, reverse Time, escape Death, befriend Chaos, face the End of the World. Knowledge based progression. Full of secrets.
- 8
Mental Saga
Single-player alternative to illWill — playable solo, no multiplayer required. Shares Action with illWill.
A psychedelic story-driven game that incorporates several styles of action-oriented gameplay and an interactive comic book. Run, jump, shoot, drive fast cars and connect the dots to resolve the enigma that keeps you trapped in an ever changing obscure world.
- 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.