Games like Grisaia Phantom Trigger Vol.5.5
Games like Grisaia Phantom Trigger Vol.5.5 include Marco & The Galaxy Dragon, ATRI -My Dear Moments-, Doki Doki Literature Club Plus!, Magical Girl Witch Trials, and NEKOPARA Vol. 1. We matched them by the tags players give Grisaia Phantom Trigger Vol.5.5 on Steam (Visual Novel, Anime, Cute, Adventure, and Casual): closest matches first, and among equally close ones the better-known games.

Marco & The Galaxy Dragon
Shared: Visual Novel · Anime · Adventure

ATRI -My Dear Moments-
Shared: Visual Novel · Anime · Cute

Doki Doki Literature Club Plus!
Shared: Visual Novel · Anime · Cute

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

NEKOPARA Vol. 1
Shared: Anime · Visual Novel · Cute

Maitetsu:Last Run!!
Shared: Visual Novel · Anime · Cute

NEKOPARA Vol. 0
Shared: Anime · Visual Novel · Cute

Senren * Banka
Shared: Visual Novel · Anime · Cute

Tricolour Lovestory
Shared: Visual Novel · Anime · Casual

NEKOPARA Vol. 2
Shared: Anime · Cute · Visual Novel

Danganronpa Another Episode: Ultra Despair Girls
Shared: Anime · Female Protagonist · Visual Novel

NEEDY STREAMER OVERLOAD
Shared: Anime · Visual Novel · Cute

Mirror 2: Project X
Shared: Anime · Visual Novel · Female Protagonist

NEKOPARA Vol. 4
Shared: Anime · Visual Novel · Cute

NEKOPARA Vol. 3
Shared: Anime · Visual Novel · Cute

Muse Dash
Shared: Anime · Cute · Casual

eden*
Shared: Visual Novel · Anime · Adventure

Fox Hime Zero
Shared: Visual Novel · Anime · Cute

Stella of The End
Shared: Visual Novel · Anime · Adventure

月に寄りそう乙女の作法
Shared: Visual Novel · Casual · Story Rich

Far Away
Shared: Visual Novel · Anime · Story Rich

Florence
Shared: Adventure · Casual · Cute

Tiny Snow
Shared: Visual Novel · Anime · Adventure

MiSide
Shared: Cute · Story Rich · Anime