.droid file: how to open it on Windows

1 Windows app registers the .droid extension. Install one of them to open the file with a double-click.

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  UndertaleModTool

  The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!)

  Open source 0.9.2.0 ★ 2.1K

Related guide: Change the default app for a file type in Windows