Definitions for "Roguelike"
a dungeon crawler where no two games are the same
A roguelike is a computer game that borrows some of the elements of the 1980's computer game, Rogue. A roguelike is a superficially two-dimensional dungeon crawling computer game, usually with simple text or ASCII "graphics" and many with "tiles" which replace the rather limited character set with a wider array.
a balance between orthoganality and special cases