Frogames today announced the release of Be Yourself!, the first extension for Penguins Arena - Sedna's World. Penguins Arena: Be Yourself! introduced two new features to the game: penguins customization and "Duels", a new game mode. This update is totally free - all registred users will get this new version for no additional fees and for future users, the price of the game hasn't changed ($19.95 USD). A new demo of Penguins Arena has been added in our download area.