Games like Ninehouse
Games like Ninehouse include ATRI -My Dear Moments-, Volcano Princess, LoveChoice, Senren * Banka, and Doki Doki Literature Club Plus!. We matched them by the tags players give Ninehouse on Steam (Casual, Dating Sim, JRPG, Female Protagonist, and Emotional): closest matches first, and among equally close ones the better-known games.

ATRI -My Dear Moments-
Shared: Dating Sim · Casual · Cute

Volcano Princess
Shared: Female Protagonist · Dating Sim · Casual

LoveChoice
Shared: Dating Sim · Romance · Casual

Senren * Banka
Shared: Dating Sim · Casual · Cute

Doki Doki Literature Club Plus!
Shared: Dating Sim · Cute · Casual

STORY OF SEASONS: Friends of Mineral Town
Shared: Casual · Dating Sim · Cute

Emily is Away <3
Shared: Dating Sim · Casual · Emotional

Florence
Shared: Casual · Female Protagonist · Cute

Persona 4 Golden
Shared: JRPG · Story Rich · Emotional

Hyperdimension Neptunia Re;Birth1
Shared: JRPG · Female Protagonist · Cute

WitchSpring R
Shared: Female Protagonist · JRPG · Cute

Love Is All Around
Shared: Dating Sim · Romance · Multiple Endings

Unpacking
Shared: Casual · Cute · Relaxing

CLANNAD
Shared: Dating Sim · Romance · Story Rich

Persona 3 Reload
Shared: JRPG · Dating Sim · Emotional

灾厄黑龙与谎言公主
Shared: Dating Sim · Female Protagonist · JRPG

WitchSpring3 Re:Fine - The Story of Eirudy -
Shared: Casual · Female Protagonist · Cute

Persona 5 Royal
Shared: JRPG · Story Rich · Emotional

Sweet Home
Shared: Female Protagonist · Dating Sim · Emotional

私のリアルは充実しすぎている フルボイス版
Shared: Female Protagonist · Romance · Funny

NEKOPARA Vol. 1
Shared: Dating Sim · Cute · Casual

Otaku's Adventure
Shared: Dating Sim · Funny · Multiple Endings

Hatoful Boyfriend
Shared: Dating Sim · Female Protagonist · Story Rich

The Sims™ 4
Shared: Dating Sim · Casual · Romance