"The Dizzy series of computer games, published by Codemasters, was one of the most successful European computer game brands of the late 1980s. The games were based around a central figure: an intelligent egg-like creature called Dizzy. The games would typically involve Dizzy trying to save his friends and family the Yolkfolk, often from the schemes of his arch nemesis, the evil wizard Zaks.
Most of the games in the series were platform games, with an emphasis on puzzle solving, similar to graphic adventures. Dizzy would roam around various fairytale-like locations, collecting objects, interacting with other characters, and solving logical puzzles. Rather than jumping in the conventional platform-game way, Dizzy would somersault and roll around the landscape; hence the name "Dizzy". The eight games which follow this style, usually referred to as the arcade adventures, are considered the 'core' games in the series; however, several spin-off titles were released, including Fast Food Dizzy, Kwik Snax and Dizzy Down the Rapids."
Source: Wikipedia, "Dizzy_series", available under the CC-BY-SA License.