Games like Best Day Ever
Games like Best Day Ever include Detroit: Become Human, Undertale, Road 96, The Henry Stickmin Collection, and The Wolf Among Us. We matched them by the tags players give Best Day Ever on Steam (Indie, Choices Matter, Multiple Endings, Choose Your Own Adventure, and Adventure): closest matches first, and among equally close ones the better-known games.
Detroit: Become Human
Shared: Choices Matter · Multiple Endings · Story Rich
Undertale
Shared: Choices Matter · Multiple Endings · Indie
Road 96
Shared: Choices Matter · Adventure · Multiple Endings
The Henry Stickmin Collection
Shared: Multiple Endings · Choose Your Own Adventure · Choices Matter
The Wolf Among Us
Shared: Adventure · Multiple Endings · Choices Matter
Late Shift
Shared: Choices Matter · Multiple Endings · Choose Your Own Adventure
Suzerain
Shared: Choices Matter · Choose Your Own Adventure · Visual Novel
The Test
Shared: Choose Your Own Adventure · Multiple Endings · Choices Matter
The Life and Suffering of Sir Brante
Shared: Choices Matter · Choose Your Own Adventure · Indie
Love Is All Around
Shared: Visual Novel · Multiple Endings · Choices Matter
Far Away
Shared: Choices Matter · Visual Novel · Singleplayer
Emily is Away <3
Shared: Choices Matter · Indie · Multiple Endings
OneShot
Shared: Indie · Choices Matter · Story Rich
Slay the Princess — The Pristine Cut
Shared: Choices Matter · Visual Novel · Choose Your Own Adventure
Growing Up
Shared: Choices Matter · Multiple Endings · Adventure
To the Moon
Shared: Indie · Adventure · Story Rich
Roadwarden
Shared: Indie · Adventure · Choices Matter
Life is Strange: True Colors
Shared: Choices Matter · Multiple Endings · Choose Your Own Adventure
Otaku's Adventure
Shared: Multiple Endings · Indie · Visual Novel
Life is Strange: Before the Storm
Shared: Choices Matter · Story Rich · Adventure
Until Dawn™
Shared: Choices Matter · Multiple Endings · Choose Your Own Adventure
The Stanley Parable
Shared: Indie · Multiple Endings · Adventure
The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Multiple Endings · Visual Novel · Interactive Fiction
Coffee Talk
Shared: Visual Novel · Interactive Fiction · Choices Matter