[Jiaz]

You could either add prefixes like
[EBOOK] name
[GAME] name
and later filter on the prefix of package name
or store the category information within the comment field and use filter on comment then

of course we could add a new column category as well but that's lot of work (GUI, table framework, sorting, packagizer and also settings to define your own categories). That's why we first try to find a solution that avoids adding new features