The "proper" contents you should expect within the Deluxe Edition, as specified by official Steam listings , are:
The file is an image file containing the v2.0 build of the game Dome Keeper , bundled with the Deluxe Edition bonus content.
: A new cosmetic skin for the Engineer character. Vigilant Owl : A pet that accompanies you in the dome. Assessor Gear Pack (Cosmetic) : Arcane Cloak : A cosmetic skin for the Assessor character. Baby Sea Dragon : A pet for the Assessor character.
: Includes the atmospheric game music in high-quality MP3 and lossless FLAC formats. Engineer Pack (Cosmetic) :
This specific "v2.0" build likely refers to a major milestone update in the game's development cycle, which often includes balance changes, bug fixes, or new gameplay features like the Springloaded or Double Dome updates seen in earlier versions.
: The core Dome Keeper roguelike mining game where you defend your dome against waves of aliens.