*Topic moved to 'Help for New Tamagotchi Pet Owners'*
It's a Home Deka Tamagotchi, more specifically the "King of Games" Deka. In this Tamagotchi, no characters are raised. It's basically an Olympics-styled Tamagotchi. There are 10 games on it and the goal is to play and become the champion of all of them in one sitting. You are able to practice all of the games in a Game Center and when you feel ready, you can enter the Stadium and begin the championship. After you win one game, you advance to the next and keep doing so as long as you win each game. As soon as you lose one game though, you are ejected from the Stadium and are required to start over each time you enter the Stadium. The Gotchi Points you earn from practicing the games can be transferred via infrared for use in the Keitai, Akai, UraTama, and EnTama Tamagotchis. See THIS page for more information on each game. Great find, by the way! I have one too and it's a fun one!