CaveMania

On the title screen (option screen), type any one of the following:

JDYBWXNC                    Start at The Island.
PSYRHFBN                    Start at Funghi Island.
NZDWOESD                    Start at Dust Island.
LGUIRHSG                    Start at Lavaville.
EXISTENCE PRECEDES ESSENCE  Press 'N' to skip levels.

NOTE: Type at a slow steady pace.