MuseScore Studio
An open-source notation and playback application with keyboard and MIDI input, scores and parts, MusicXML, MIDI, audio export, SoundFonts, VST3, and extensive engraving controls.
Why use it
Composers can prepare readable material for game themes, live recording, or outsourced performers and exchange arrangements with DAWs and notation tools through standard formats.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
MuseScore Studio itself is free, while MuseSounds, online scores, and third-party libraries carry separate terms; synthesized playback does not replace orchestration review or final mixing.