Incorrect scenes in build#

Unity only builds the scenes listed in the build settings. The scene at index 0 is the only scene loaded by default.


Edit the build settings (FileBuild Settings...) and add your scenes to the build. You can click the add open scenes button, or drag the scene assets into the Scenes in build area.
You can reorder scenes by dragging. The scene at index 0 is the scene that will be loaded when the game launches.

If you still have issues with your scenes once you rebuild, check the player logs.