Wizard and the Princess (1980), also known as Adventure in Serenia (1982), is a 1980s computer game by On-Line Systems for the Apple II, Apple II Plus, and Commodore 64. It is the second title released in On-Line Systems' Hi-Res Adventure series after Mystery House. It is a prelude to the King's Quest series in both story and concept (though chronologically set several years before King's Quest V). It's the first adventure game released with full color graphics.