Games like Soundpad
Games like Soundpad include A Dance of Fire and Ice, Hellblade: Senua's Sacrifice, The Stanley Parable, The NOexistenceN of you AND me, and Chill with You : Lo-Fi Story. We matched them by the tags players give Soundpad on Steam (Utilities, Audio Production, Software, Music, and Psychological): closest matches first, and among equally close ones the better-known games.

A Dance of Fire and Ice
Shared: Music · Singleplayer · Atmospheric

Hellblade: Senua's Sacrifice
Shared: Psychological · Atmospheric · Singleplayer

The Stanley Parable
Shared: Psychological · Comedy · Singleplayer

The NOexistenceN of you AND me
Shared: Psychological · Visual Novel · Singleplayer

Chill with You : Lo-Fi Story
Shared: Utilities · Atmospheric · Visual Novel

Metal: Hellsinger
Shared: Music · Atmospheric · Singleplayer

Higurashi When They Cry Hou - Ch.1 Onikakushi
Shared: Psychological · Atmospheric · Singleplayer

Rhythm Doctor
Shared: Music · Singleplayer · Comedy

NEEDY STREAMER OVERLOAD
Shared: Psychological · Visual Novel · Singleplayer

Raging Loop
Shared: Psychological · Atmospheric · Visual Novel

Milk outside a bag of milk outside a bag of milk
Shared: Psychological · Visual Novel · Singleplayer

Paradiddle
Shared: Audio Production · Music · Utilities

No, I'm not a Human
Shared: Singleplayer · Atmospheric · Psychological

OFFBEAT
Shared: Audio Production · Utilities · Music

Psychonauts 2
Shared: Psychological · Singleplayer · Comedy

Muse Dash
Shared: Music · Singleplayer · Anime

Mini Cozy Room: Lo-Fi
Shared: Music · Utilities · Singleplayer

Geometry Dash
Shared: Music · Singleplayer · Indie

The Artful Escape
Shared: Music · Singleplayer · Atmospheric

The Coffin of Andy and Leyley
Shared: Psychological · Singleplayer · Visual Novel

The Test
Shared: Psychological · Singleplayer · Atmospheric

Yunyun Syndrome!? Rhythm Psychosis
Shared: Music · Psychological · Singleplayer

Rocksmith® 2014 Edition REMASTERED LEARN & PLAY
Shared: Music · Software · Singleplayer

SILENT HILL 2
Shared: Psychological · Atmospheric · Singleplayer