Single-player games like Nightmare
Below are 8 single-player Steam games similar to 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 Nightmare page.
Ranked picks
- 1
UnHolY DisAsTeR
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
The novice priestess who serves "the Spirit of Aqua”, Clementine fights against so-called demons with the spirit's blessings in this exploration based side-scrolling action game!
- 2
Swing Hero
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
"Swing Hero" is an adventure RPG blending time management and semi-real-time combat. Balance working, training stats, and challenging stages to unlock rewards within 30 days. Featuring a unique mouse-controlled battle system and Live2D technology for an immersive experience.
- 3
UnderParty
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
UnderParty is an Action Platformer game. This game is made up of a very high level of difficulty. It's very violent, so be careful.
- 4
LEWDAPOCALYPSE Hentai Evil
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
It's a game about Zombies, Viruses, Love, Sex and Evil Corporations. You'll have to force your way to safety through lots of Zombies, Monsters and Lusted Cocks and Pussies! And don't forget the PENESIS! ADULTS ONLY!
- 5
CYAN BRAIN
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
Cyan Brain is a decadent sci-fi side-scrolling action shooter. Awaken to face endless slaughter and desperate encounters. "Are you ready to make the ultimate devotion?"
- 6
MAGICAL ANGEL FAIRY HEART
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
All characters in this game are over 18 years old.
- 7
Meritocracy of the Oni & Blade
Single-player alternative to Nightmare — playable solo, no multiplayer required.
Her home town burned to ground and her parents killed by the "Red Demon", Aika Amagami was left orphaned and alone. Forging her path in life with the blade, what fate awaits her? Be it hope? Depravity? Or perhaps corruption? A multi ending RPG with 3 routes and 10 endings!
- 8
Smash Girls
Single-player alternative to Nightmare — playable solo, no multiplayer required. Shares Action with Nightmare.
Smash Girls is a 2D action game. One day, you "Sosuke Kujo" were kidnapped by the mafia "Kyokakai", involved in a battle with other gangs…… Fortunately, as a mafia boss you also enjoys a specialized sex service! Use your fists to dominate girls!