Games like The Therapist Impostor
Games like The Therapist Impostor include The Henry Stickmin Collection, Late Shift, Dispatch, There Is No Game: Wrong Dimension, and Undertale. We matched them by the tags players give The Therapist Impostor on Steam (Adventure, Casual, Interactive Fiction, Choose Your Own Adventure, and Comedy): closest matches first, and among equally close ones the better-known games.

The Henry Stickmin Collection
Shared: Choose Your Own Adventure · Funny · Comedy

Late Shift
Shared: Choose Your Own Adventure · Interactive Fiction · Adventure

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

There Is No Game: Wrong Dimension
Shared: Adventure · Casual · Funny

Undertale
Shared: Choices Matter · Funny · Multiple Endings

Tales from the Borderlands
Shared: Adventure · Comedy · Choices Matter

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

Road to Empress Ⅱ
Shared: Adventure · Interactive Fiction · Choices Matter

The Stanley Parable
Shared: Comedy · Adventure · Funny

Love Is All Around
Shared: FMV · Interactive Fiction · Choices Matter

Breakout 13
Shared: Interactive Fiction · Choose Your Own Adventure · FMV

I Wani Hug that Gator!
Shared: Choose Your Own Adventure · Interactive Fiction · Choices Matter

80 Days
Shared: Adventure · Choose Your Own Adventure · Interactive Fiction

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

Florence
Shared: Casual · Adventure · Indie

To the Moon
Shared: Adventure · Interactive Fiction · Story Rich

Donut County
Shared: Casual · Funny · Adventure

Road 96
Shared: Adventure · Choices Matter · Choose Your Own Adventure

Not For Broadcast
Shared: Adventure · Choices Matter · FMV

The Complex
Shared: Adventure · Interactive Fiction · Choices Matter

Death and Taxes
Shared: Choices Matter · Casual · Choose Your Own Adventure

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · Choices Matter

Road to Empress I
Shared: Choices Matter · FMV · Adventure

Reigns
Shared: Choices Matter · Choose Your Own Adventure · Adventure