Single-player games like Help! I'm Turning Into A Mermaid!
Below are 12 single-player Steam games similar to Help! I'm Turning Into A Mermaid!, 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 Help! I'm Turning Into A Mermaid! page.
Ranked picks
- 1
Arcade Spirits
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
Arcade Spirits is a romantic visual novel that follows an alternative timeline where the 1983 video game crash never occurred. It's 20XX and you've just started a new job at the Funplex game arcade. Who will you meet along the way? Will you find the romance you're seeking?
- 2
Magical Princess
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Raise your daughter while she attends a magical academy. Choose which classes she attends, jobs she does, training she undergoes, and more in a character raising sim packed full of story and over 50 endings to reach. How she grows up to be the world's cutest princess depends on you!
- 3
Whimel Academy
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
Live the day-to-day of a magic school student! Whimel Academy is a cozy magic school simulation game. Manage your time and balance between studying magic, part-time jobs, and befriending (or romance) classmates in this wholesome and enchanting world!
- 4
Monster Prom 4: Monster Con
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
Can you find love at the nerdiest convention ever? "Monster Con" goes back to the multiplayer dating sim formula: go through absurd and funny situations as you find love among six sexy monsters! Who will you romance? The mimic who cosplays? The idol clown? Or the eldritch cutie? (There's also Liam)
- 5
Wylde Flowers
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Join Tara on a heartfelt journey to become a witch in Wylde Flowers. Farm by day, and cast spells by night as you craft your cottagecore life and bond with your coven. Come to know and love the fully voice acted characters of Fairhaven, as you unravel a local mystery.
- 6
Monster Prom 3: Monster Roadtrip
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
Embark on a road trip like no other in this co-op narrative survival adventure. Visit fun locations, meet wacky characters, and manage your resources wisely. And yes: you still can date some hot monsters ;)
- 7
Winds of Change
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Lead The Rebellion, build your army, and shape the world with your choices. A story-heavy adventure game with multiple endings, romance options, and non-linear storytelling. A vast fantasy world waiting to be explored. Inspired by Dragon Age, and Mass Effect. Fully voice acted by a stellar cast!
- 8
Arcadia Fallen
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Play the role of a young alchemist apprentice who is unwillingly bound to an illegal spirit. Suddenly drawn into a war between humanity and magic, they must join a group of unlikely heroes to escape their own doom, hopefully saving the world along the way.
- 9
Max's Big Bust 2 - Max's Bigger Bust
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Max is back! After being transformed once again, Max begins to uncover a massive conspiracy involving a cult of mysterious witches, a bootleg DVD smuggling ring and a horde of half human half octopus monstergirls from another dimension.
- 10
My Mad Scientist Roommate Turned Me Into Her Personal Robotic Battle Maiden?!?
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
After being inadvertantly transformed into a robotic battle maiden by their criminally insane roommate, Sam is dragged along on a ridiculous adventure in a dimension full of ravenous monster girls. Will Sam find a way out of this mess and return to their original body? Probably not, but who knows!
- 11
Max's Big Bust - A Captain Nekorai Tale
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required. Shares Adventure with Help! I'm Turning Into A Mermaid!.
Max's Big Bust is a Life Sim/Visual Novel that follows the story of two cops, Max and Brad, as they investigate a shady new drug that's been circulating the mean streets of Axon City.
- 12
Alluna and Brie Re-Tentacled
Single-player alternative to Help! I'm Turning Into A Mermaid! — playable solo, no multiplayer required.
The definitive edition of the cult classic Aussie RPG! Alluna and Brie Re-Tentacled is a massive overhaul of the original game, featuring new bosses, way faster load times and heaps of quality of life improvements. It's the same great game but now with more tentacles!