Games like SCP Foundation: ITTLG - Chapter 1
Games like SCP Foundation: ITTLG - Chapter 1 include Slay the Princess — The Pristine Cut, and Roger, Far Away, Florence, and The Henry Stickmin Collection. We matched them by the tags players give SCP Foundation: ITTLG - Chapter 1 on Steam (Choose Your Own Adventure, Visual Novel, Animation & Modeling, Design & Illustration, and Point & Click): closest matches first, and among equally close ones the better-known games.

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Choose Your Own Adventure · Point & Click

and Roger
Shared: Visual Novel · Point & Click · 2D

Far Away
Shared: Visual Novel · Choose Your Own Adventure · Female Protagonist

Florence
Shared: Female Protagonist · Visual Novel · Cute

The Henry Stickmin Collection
Shared: Choose Your Own Adventure · Point & Click · 2D

私のリアルは充実しすぎている フルボイス版
Shared: Visual Novel · Female Protagonist · Text-Based

Homicipher
Shared: Visual Novel · Female Protagonist · Choose Your Own Adventure

Petit Game Collection vol.1
Shared: Visual Novel · Choose Your Own Adventure · Point & Click

Hooked on You: A Dead by Daylight Dating Sim™
Shared: Visual Novel · Choose Your Own Adventure · 2D

Senren * Banka
Shared: Visual Novel · First-Person · Cute

Refind Self: The Personality Test Game
Shared: Visual Novel · Female Protagonist · Choose Your Own Adventure

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

Suzerain
Shared: Choose Your Own Adventure · Visual Novel · Text-Based

Little Misfortune
Shared: Point & Click · Female Protagonist · Indie

The Wolf Among Us
Shared: Choose Your Own Adventure · Visual Novel · Point & Click

60 Seconds! Reatomized
Shared: Choose Your Own Adventure · 2D · Point & Click

Marco & The Galaxy Dragon
Shared: Visual Novel · Female Protagonist · Cute

Our Life: Beginnings & Always
Shared: Visual Novel · Choose Your Own Adventure · Cute

Fate/hollow ataraxia REMASTERED
Shared: Visual Novel · Choose Your Own Adventure · Point & Click

If My Heart Had Wings
Shared: Visual Novel · Point & Click · Cute

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Cute · 2D

No Case Should Remain Unsolved
Shared: Visual Novel · Point & Click · Female Protagonist

Dagon: by H. P. Lovecraft
Shared: Visual Novel · Choose Your Own Adventure · Horror

Hookah Haze
Shared: Visual Novel · Point & Click · Choose Your Own Adventure