Single-player games like Monster Ops 20
Below are 16 single-player Steam games similar to Monster Ops 20, 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 Monster Ops 20 page.
Ranked picks
- 1
Monster Ops 21
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
Season 2 of Monster Ops! Black Ops soldiers Wraith and Tide know the world is against them, and they can only rely on each other. Two soldiers, forced to go rogue, with a desperate mission. There's no one left they can trust. A NSFW Gay Visual Novel Dating Sim put out in Monthly Episodes!
- 2
Monster Ops 19
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
Season 2 of Monster Ops! Black Ops soldiers Wraith and Tide know the world is against them, and they can only rely on each other. Two soldiers, forced to go rogue, with a desperate mission. There's no one left they can trust. A NSFW Gay Visual Novel Dating Sim put out in Monthly Episodes!
- 3
Banu in the West
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
Banu has a messy past—she’s cheated before but wants to change. She spends a month in the West while her husband battles illness. Players guide her through temptations, cultural clashes, and difficult choices.
- 4
Bride for the Princess
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
Bride for the Princess is Erotic Yuri Visual Novel that tells a story about a Princess who must find someone to marry before her upcoming coronation due to a conspiracy; a legislation that was passed behind her back in attempt to ruin her.
- 5
Living with Temptation 2: French Confessions
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
Join your wife Tracy and nanny Lisa on a trip to your cousin's lavish estate in France and embark on a sensual journey like no other. Encounter new acquaintances, challenge your loyalty, and explore the depths of temptation in all its hues.
- 6
Apocalypse with Femboy
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
You wake with amnesia in a world of monsters. The only clue to your identity is a photograph of a beautiful stranger. Sticking with him may be your only hope for survival… but the greatest danger is the secret he reveals when he falls asleep.
- 7
My Cute Roommate 2
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
A wild 18+ visual novel about a guy with a huge cock, a snarky inner voice, lots of sexy girls, explicit scenes, spy intrigue, and crazy minigames. A new story in the MCR universe!
- 8
Lust Academy - Season 1
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
Lust Academy is a choice-driven adult Visual Novel about adventures and studying in the school of magic and wizardry. Play as a young guy who got invited to Cordale Academy. The whole world full of sorcery and passion awaits you!
- 9
To Trust an Incubus
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
The temp worker Kenta is trapped in a lab with four sexy incubus aliens from another dimension. Kenta dates Incubi, incubi date each other, and even the lab workers can get together! A long gay sci-fi yaoi/bara dating sim loaded with 400 CGs!
- 10
Mister Versatile: A Gay Superhero Visual Novel
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
A gay superhero visual novel! The Lone Wolf Mister Versatile thinks super teams are a pain in the ass, but four super-hotties have decided they want to watch his back anyway! Date a villain, a rookie, a symbiote, and a superman-ish alien. Loaded with explicit CGs.
- 11
Morningdew Farms: A Gay Farming Game
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
Sweet southern boy Cody always dreamed of living off the land. Now he's taken over his granddaddy's farm and can begin a wonderful new life in the village of Morningdew--a notorious Gayborhood! Loaded with interactive farming and sizzling gay romance!
- 12
Alpha Hole Prison - A Yaoi, Gay, Bara Visual Novel
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
A Gay Prison Visual Novel Dating Sim! Earthling Miguel Santos has been sentenced to life at Alpha Hole, a notorious space prison. His survival depends on using his charms to convince a powerful ally to protect him. A gigantic seven route hardcore gay dating sim loaded with animated scenes!
- 13
My Magical Demon Lover
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required.
Spicy Ecchi Content + A Yaoi Fantasy Story + A Dash of Comedy = My Magical Demon Lover, a 'mature players' dating sim that puts the wannabe wizard Tristan with his choice of three hot demons.
- 14
Maelstrom: A Yaoi Visual Novel
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
Disgraced soldier Demetri is exiled to Secren, a dangerous world devoid of women. Earthlings are smaller and weaker than the violent men of Secren. Demetri's only hope for survival is to bond with a strong mate who can love and protect him. The heterosexual Italian-American is reluctant.
- 15
Sentimental Trickster: Yaoi BL Gay Visual Novel
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
A slice-of-life visual novel with darker twists hiding within! Haru Amari wasn't looking for love, just a new beginning far from his past. Instead he finds himself in complicated relationships where he must decide between his needs and those of the men around him.
- 16
Vampire Slave 1: A Yaoi Visual Novel
Single-player alternative to Monster Ops 20 — playable solo, no multiplayer required. Shares Casual with Monster Ops 20.
The world's most ancient vampire, a young & unprepared new leader of a centuries old vampire-hunting organization, thrust together by fate. Thalos knows he's found his beloved, but Dusty must never let himself grow close to a vampire. A kinetic visual novel that grows spicier with each installment!