The decoration, modification, or mutilation of a computer case.

Modifications to computer cases are done for many reasons, ranging from 'geek vanity' to improving internal airflow. They can be as simple as a coat of black paint on the outside or as complex as replacing both sides with plexiglass, adding some sort of illumination inside, and adding several 120mm fans.

Also called a case mod, it usually generates near instant respect at a lan party and can be quite a nice touch to your interior decorating. Case mods can actually be quite functional in some situations, allowing the user to use the case in environments it wasn't intended for or improving cooling so they can reach the next highest bus speed on that marginal overclock.

See also: Paint Your Computer, lan party, geek vanity, HardOCP