Games like Trombone Champ: Unflattened
Games like Trombone Champ: Unflattened include Trombone Champ, Beat Saber, Garry's Mod, Pih, and Goat Simulator. We matched them by the tags players give Trombone Champ: Unflattened on Steam (Rhythm, Casual, Comedy, Funny, and 6DOF): closest matches first, and among equally close ones the better-known games.

Trombone Champ
Shared: Rhythm · Comedy · Funny

Beat Saber
Shared: VR · Rhythm · Singleplayer

Garry's Mod
Shared: Casual · Funny · Singleplayer

Pih
Shared: Comedy · Funny · VR

Goat Simulator
Shared: Comedy · Funny · Casual

Rhythm Doctor
Shared: Rhythm · Singleplayer · Funny

Job Simulator
Shared: VR · Funny · Comedy

Muse Dash
Shared: Rhythm · Casual · Singleplayer

Plants vs. Zombies GOTY Edition
Shared: Casual · Singleplayer · Comedy

Donut County
Shared: Casual · Funny · Indie

Maestro
Shared: VR · Rhythm · Casual

Hand Simulator
Shared: VR · Funny · Comedy

There's Poop In My Soup
Shared: Casual · Funny · Comedy

The Henry Stickmin Collection
Shared: Funny · Comedy · Singleplayer

Gorilla Tag
Shared: VR · Funny · First-Person

Placid Plastic Duck Simulator
Shared: Casual · Collectathon · Funny

Vacation Simulator
Shared: VR · Funny · Comedy

Slime Rancher
Shared: Singleplayer · Funny · Casual

Comedy Night
Shared: Casual · Comedy · Funny

MEMOLOGY: GOYDA
Shared: Comedy · Funny · Casual

Poker Night at the Inventory
Shared: Casual · Funny · Comedy

A Dance of Fire and Ice
Shared: Rhythm · Singleplayer · Casual

Little Inferno
Shared: Casual · Funny · Comedy

The Stanley Parable
Shared: Comedy · Funny · First-Person