Games like Rainbow Sea
Games like Rainbow Sea include Refind Self: The Personality Test Game, Love Is All Around, The Hungry Lamb: Traveling in the Late Ming Dynasty, No Case Should Remain Unsolved, and Far Away. We matched them by the tags players give Rainbow Sea on Steam (Choose Your Own Adventure, Interactive Fiction, Female Protagonist, Immersive Sim, and Visual Novel): closest matches first, and among equally close ones the better-known games.

Refind Self: The Personality Test Game
Shared: Interactive Fiction · Female Protagonist · Visual Novel

Love Is All Around
Shared: Visual Novel · Interactive Fiction · Dating Sim

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Story Rich

No Case Should Remain Unsolved
Shared: Interactive Fiction · Visual Novel · Story Rich

Far Away
Shared: Visual Novel · Choose Your Own Adventure · Female Protagonist

The NOexistenceN of you AND me
Shared: Visual Novel · Interactive Fiction · Story Rich

Road to Empress I
Shared: Female Protagonist · Visual Novel · Story Rich

Five Hearts Under One Roof season2
Shared: Choose Your Own Adventure · Immersive Sim · Interactive Fiction

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Choose Your Own Adventure · Story Rich

LoveChoice
Shared: Visual Novel · Story Rich · Cute

I Wani Hug that Gator!
Shared: Choose Your Own Adventure · Visual Novel · Story Rich

School Days
Shared: Choose Your Own Adventure · Immersive Sim · Interactive Fiction

Magical Girl Witch Trials
Shared: Female Protagonist · Visual Novel · Cute

Florence
Shared: Female Protagonist · Story Rich · Interactive Fiction

Suzerain
Shared: Choose Your Own Adventure · Visual Novel · Interactive Fiction

The Test
Shared: Choose Your Own Adventure · Story Rich · Multiple Endings

The Three Kingdoms: Rebirth
Shared: Visual Novel · Interactive Fiction · Choose Your Own Adventure

月华辉映之刻
Shared: Female Protagonist · Visual Novel · Interactive Fiction

Mirror 2: Project X
Shared: Female Protagonist · Interactive Fiction · Visual Novel

Noctuary
Shared: Interactive Fiction · Cute · Visual Novel

Volcano Princess
Shared: Female Protagonist · Visual Novel · Multiple Endings

Breakout 13
Shared: Interactive Fiction · Choose Your Own Adventure · Immersive Sim

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Female Protagonist · Interactive Fiction

Endless Monday: Dreams and Deadlines
Shared: Choose Your Own Adventure · Interactive Fiction · Visual Novel