Games like summer haze/glory days
Games like summer haze/glory days include Our Life: Beginnings & Always, Life is Strange: True Colors, BAD END THEATER, Love Curse: Find Your Soulmate, and Homicipher. We matched them by the tags players give summer haze/glory days on Steam (Visual Novel, Choose Your Own Adventure, Character Customization, Choices Matter, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

Our Life: Beginnings & Always
Shared: Visual Novel · Character Customization · LGBTQ+

Life is Strange: True Colors
Shared: Choices Matter · Choose Your Own Adventure · LGBTQ+

BAD END THEATER
Shared: Visual Novel · Multiple Endings · Choices Matter

Love Curse: Find Your Soulmate
Shared: Visual Novel · LGBTQ+ · Choices Matter

Homicipher
Shared: Visual Novel · Multiple Endings · Choose Your Own Adventure

Emily is Away <3
Shared: Choices Matter · Multiple Endings · Visual Novel

a new life.
Shared: Visual Novel · LGBTQ+ · Multiple Endings

The Wolf Among Us
Shared: Choose Your Own Adventure · Visual Novel · Choices Matter

Life is Strange: Double Exposure
Shared: Choices Matter · Choose Your Own Adventure · LGBTQ+

私のリアルは充実しすぎている フルボイス版
Shared: Visual Novel · Otome · Multiple Endings

Love Is All Around
Shared: Visual Novel · Multiple Endings · Choices Matter

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

Coffee Talk
Shared: Visual Novel · Dialogue Heavy · LGBTQ+

LoveChoice
Shared: Visual Novel · Choices Matter · Multiple Endings

I Wani Hug that Gator!
Shared: Visual Novel · Choose Your Own Adventure · Choices Matter

Life is Strange Remastered
Shared: Choices Matter · Multiple Endings · LGBTQ+

Class of '09: The Flip Side
Shared: Visual Novel · Choose Your Own Adventure · Multiple Endings

Far Away
Shared: Visual Novel · Choices Matter · Choose Your Own Adventure

Suzerain
Shared: Visual Novel · Choose Your Own Adventure · Choices Matter

Money for Girls: Amortized
Shared: Visual Novel · LGBTQ+ · Character Customization

Dispatch
Shared: Choices Matter · Choose Your Own Adventure · Romance

Dream Daddy: A Dad Dating Simulator
Shared: Visual Novel · LGBTQ+ · Character Customization

The Test
Shared: Choose Your Own Adventure · Multiple Endings · Visual Novel

Sweet Home
Shared: Visual Novel · LGBTQ+ · Multiple Endings