: Pieces move in straight lines like Rooks but can jump between the ground and Skyboard tiers [25, 28].
Are you writing about the within the Codex Alera universe? Ludus-CODEX
Beyond the novel, scholars use the phrase to describe how traditional books (codices) are transformed by digital gaming. : Pieces move in straight lines like Rooks
: The First Lord is the most vital piece, functioning similarly to the King in Chess; if captured, the game ends immediately [25]. Ludus-CODEX
: This neologism combines ludic (playful) and codex (book). It describes "book-bound and book-adjacent reading objects" found within video games.