Related
Quickstart: Existing Project
Open your project in Summer
Technical
What if I have an existing project?
Open a compatible project in Summer Engine, review the first import, and continue building a Summer game.
Open a committed copy in Summer Engine and review the first import. GDScript, text scenes,
resources, and assets use familiar formats; native extensions, editor plugins, and
version-sensitive imports still need compatibility testing. The generated
compatibility reference is the source of truth.