Single-player games like Rainbow Sea
Below are 8 single-player Steam games similar to Rainbow Sea, 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 Rainbow Sea page.
Ranked picks
- 1
As Long As It's Not Illegal: Act I
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Simulation with Rainbow Sea.
It's Friday night, you and the other Senior Elites devise a plan to throw a party at the rival campus. Carpool across Suncity limits, down into the lawless land of the Undercity. It's Illegal for these two cities to mingle. But is it illegal if... you're never caught?
- 2
The Three Kingdoms: Rebirth
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Adventure with Rainbow Sea.
You, an ordinary modern person, cross into the Three Kingdoms. There you meet legendary heroes and beauties. Will you retreat with your love, or rise to conquer the land? Every choice rewrites history—or leads to your doom.
- 3
Sorry! I surrounded beauty!
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Simulation with Rainbow Sea.
You embody Chen Mo, embark on a romantic journey through a first-person perspective. Throughout your interactions with different girls, you must navigate divergent choices, confront critical challenges, and gradually unravel the hidden truths woven into the story’s core.
- 4
Always The Same Blue Sky...
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Adventure with Rainbow Sea.
A gripping seaside adventure following the connection of two young souls, each unknowingly helping the other make sense of a world that seems senseless. Complemented by breathtaking artwork and an addictive soundtrack, this charming tale will definitely suck you in and leave a lasting impression!
- 5
我只是想让她们都幸福
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Adventure and Simulation with Rainbow Sea.
You are a playboy, fearless of bloody endings, whom even Casanova would envy: Once you get killed, time rewinds. Death may never defeat you, yet... fate prevails.
- 6
I Hate My Waifu Streamer
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Simulation with Rainbow Sea.
Get the streamer's attention at any cost before someone else does. Write comments, chat, and make donations to your waifu, but do not dare to hate her!
- 7
Charming Hearts
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Indie and Simulation with Rainbow Sea.
"Charming Hearts" is a real-life interactive dating game. Players will meet, get to know, and fall in love with different types of beauty. Every choice will lead to a completely different chemical reaction with "her"; every entanglement, the sweet love is entangled and pulled.
- 8
Heroines Through My Lens
Single-player alternative to Rainbow Sea — playable solo, no multiplayer required. Shares Adventure and Simulation with Rainbow Sea.
“Me? A lookbook shoot?!” New hire Kim Jiwoo joins YouTube studio Lazaworks and gets thrown into photographing top youtubers and his own bosses on day one. Under the bright lights, stolen glances turn into secret favors and forbidden romances. The more you shoot, the more hearts stolen.