Single-player games like Summer Nightmare
Below are 9 single-player Steam games similar to Summer Nightmare, 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 Summer Nightmare page.
Ranked picks
- 1

Pawn
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Adventure and Casual with Summer Nightmare.
A story rich visual novel where you must investigate a series of disappearances threatening the inhabitants of your hometown. Analyze crime scenes, interrogate suspects, witness the dreadful events unravel and face your past. Beware, innocence might be nothing but a mere illusion.
- 2

The Miskatonic
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
Explore the most prestigious occult school in North America, The Miskatonic University, in a hilarious dark comedy set after the Lovecraft canon, in which the greatest threat to mankind is its own ambitions.
- 3

CORPSE FACTORY
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
Discard your sense of morality and enter the world of CORPSE FACTORY. An obscure website allows users to request a death. Victims supposedly receive a photograph of their own corpse before they are killed! With English voice acting by an all-star cast.
- 4

SLG Remix
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
SLG Remix is an alternate kinetic version of the brand new 16-bit horror visual novel/adventure Mega Drive game Sacred Line Genesis. A surreal, twisted kinetic novel tribute to obscure visual novel / adventure games of 90s.
- 5

Blossoms Bloom Brightest
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
A sci-fi, yuri visual novel with a dollop of mystery.
- 6

Corpse Party
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
A group of friends unknowingly perform an occult ritual that traps them in an otherworldly elementary school. Here, the vengeful spirits of young children threaten their lives and their sanity, and the only hope of survival is to uncover the chilling details behind the murders of those trapped before them...
- 7

Rage Wars
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
Get prepared for the FIRST EVER shooter game based on Rage Comics ! Rage Wars is a well-made action game with a variety of weapons, worlds and enemies to challenge with.
- 8

妄想症:Deliver Me
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Indie and Adventure with Summer Nightmare.
Based on the best seller 妄想症Paranoia, the story about Lingluo's college life will bring you to a world unknown. She pursues her music dream without knowing her life is about to be turned upside down. Losing her best friend and her confidence, she plunges into the depth of despair. What will she do?
- 9

Corpse Party (2021)
Single-player alternative to Summer Nightmare — playable solo, no multiplayer required. Shares Adventure with Summer Nightmare.
Explore the haunted halls of Heavenly Host Elementary in Corpse Party (2021), the horror cult classic now updated for the next generation.