The term .7z in your query refers to a . This format is widely used for distributing large software packages or digital collections like the Premium Box because it offers high compression ratios, making it easier to download or store the massive amount of visual data (900+ CGs) and audio files included in the set. Kangoku Senkan Premium Box | vndb
: New artwork, new events, and specialized side stories like the "IF" portion from the Lilith-Izm03 series. Kangoku_Senkan_Premium_Box.7z
According to documentation on VNDB , the package typically includes: The term
: It often compiles short stories and gaiden (side story) content previously released in various Lilith-Izm anthologies. The "7z" Context Kangoku_Senkan_Premium_Box.7z
: The collection includes the official musical score for the titles included.