Games like Ultramarine
Games like Ultramarine include Dispatch, Tricolour Lovestory, Love Is All Around, NEKOPARA Vol. 0, and NEKOPARA Vol. 1. We matched them by the tags players give Ultramarine on Steam (Sexual Content, Nudity, Visual Novel, Choices Matter, and Indie): closest matches first, and among equally close ones the better-known games.

Dispatch
Shared: Sexual Content · Choices Matter · Nudity

Tricolour Lovestory
Shared: Sexual Content · Visual Novel · Nudity

Love Is All Around
Shared: Sexual Content · Visual Novel · Singleplayer

NEKOPARA Vol. 0
Shared: Nudity · Sexual Content · Visual Novel

NEKOPARA Vol. 1
Shared: Nudity · Sexual Content · Visual Novel

Knowledge, or know Lady
Shared: Sexual Content · Visual Novel · Singleplayer

NEKOPARA Vol. 2
Shared: Sexual Content · Nudity · Visual Novel

MILFs of Sunville - Season 1
Shared: Sexual Content · Nudity · Visual Novel

Summer Memories
Shared: Sexual Content · Nudity · Visual Novel

Sakura Spirit
Shared: Nudity · Visual Novel · Sexual Content

NEKOPARA Vol. 3
Shared: Sexual Content · Nudity · Visual Novel

NEKOPARA Vol. 4
Shared: Sexual Content · Visual Novel · Nudity

Sakura Swim Club
Shared: Nudity · Sexual Content · Visual Novel

Yokai's Secret
Shared: Sexual Content · Nudity · Indie

City of Broken Dreamers: Book One
Shared: Sexual Content · Nudity · Visual Novel

Baldur's Gate 3
Shared: Choices Matter · Sexual Content · Nudity

Snow Daze: The Music of Winter Special Edition
Shared: Sexual Content · Nudity · Visual Novel

Lost
Shared: Sexual Content · Nudity · Indie

Family Crush - Season 1
Shared: Sexual Content · Nudity · Visual Novel

Sixtieth Kilometer
Shared: Visual Novel · Indie · Nudity

LEWDAPOCALYPSE Hentai Evil
Shared: Sexual Content · Nudity · Indie

Dream Daddy: A Dad Dating Simulator
Shared: Sexual Content · Visual Novel · Indie

Catherine Classic
Shared: Sexual Content · Nudity · Choices Matter

Seek Girl Ⅱ
Shared: Sexual Content · Nudity · Indie