Games like Happiness Double Room
Games like Happiness Double Room include NEKOPARA Vol. 1, Tricolour Lovestory, NEKOPARA Vol. 3, 魔女的夜宴, and NEKOPARA Vol. 0. We matched them by the tags players give Happiness Double Room on Steam (Sexual Content, Hentai, Nudity, Anime, and Dating Sim): closest matches first, and among equally close ones the better-known games.

NEKOPARA Vol. 1
Shared: Hentai · Sexual Content · Nudity

Tricolour Lovestory
Shared: Sexual Content · Nudity · Dating Sim

NEKOPARA Vol. 3
Shared: Sexual Content · Hentai · Nudity

魔女的夜宴
Shared: Sexual Content · Hentai · Dating Sim

NEKOPARA Vol. 0
Shared: Sexual Content · Nudity · Anime

NEKOPARA Vol. 2
Shared: Sexual Content · Anime · Nudity

ATRI -My Dear Moments-
Shared: Anime · Visual Novel · Dating Sim

Summer Memories
Shared: Sexual Content · Hentai · Nudity

Doki Doki Literature Club Plus!
Shared: Sexual Content · Anime · Visual Novel

Love Is All Around
Shared: Sexual Content · Dating Sim · Visual Novel

NEKOPARA Vol. 4
Shared: Sexual Content · Hentai · Anime

Gaokao.Love.100Days
Shared: Dating Sim · Nudity · Visual Novel

Summer Pockets
Shared: Visual Novel · Anime · Sexual Content

YOU and ME and HER: A Love Story
Shared: Sexual Content · Visual Novel · Anime

Her New Memory - Hentai Simulator
Shared: Sexual Content · Hentai · Dating Sim

Sakura Swim Club
Shared: Sexual Content · Nudity · Anime

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

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

Yusetsu
Shared: Sexual Content · Nudity · Hentai

Sakura Spirit
Shared: Anime · Nudity · Visual Novel

Swaying Girl
Shared: Sexual Content · Hentai · Nudity

LoveChoice
Shared: Dating Sim · Visual Novel · Romance

Dream Date
Shared: Sexual Content · Hentai · Nudity

Maitetsu:Last Run!!
Shared: Sexual Content · Anime · Nudity