LUDEX game dossier

Indie

Trombone Champ: Unflattened! - Undertale + Deltarune Song Pack

Tuesday, August 12, 20251 year ago

Release

Tuesday, August 12, 2025

Player score

Awaiting reviews

Platform families

Not announced

Connected releases

Core game only

Game data from IGDB

Editorial overview

Inside Trombone Champ: Unflattened! - Undertale + Deltarune Song Pack

What it is

Six Legendary Tracks. One Unstable Trombone. The UNDERTALE + DELTARUNE Song Pack brings a whole new level of chaos (and possibly spiritual awakening) to your trombone.

Play styles

Single player

Languages

1 supported

Cinematic archive

See the world in motion

Related games

Supreme Ruler Ultimate

Tidal Tribe

Rogue Heist

Official footage, in-game captures, and production artwork—collected into one immersive gallery.

Official trailers

Announcement Trailer

Content map

Everything connected to this release

DLC, expansions, editions, and bundles are different products. Each stays in its own lane so you always know what you are looking at.

Base-game relationship

Trombone Champ: Unflattened!

This release depends on or extends the game above.

Production dossier

The complete game record

Cast, creators, hardware, release history, and the details that define how this game plays.

Platforms

SteamVR

Themes & modes