Well there are 3 games to start out with that your Tamagotchi will play at anytime. The first is a small memory type game where three notes play in a random order which you have to repeat. Then, There is a game where notes fall and you have to switch between the notes to get rid of the falling notes, and the last game you have to jump on numbered blocks before they count down and disappear. It's set up somewhat like the V4 with the stats but different in the way that you don't get money for playing the games just upped stats. Once your tamagotchi hits adult hood though 3 more games are added, a band practice game in which you have to follow along with the buttons, as arrows and circles scroll along the top. Then there are two job games one where you pick cakes and another where you match up falling vegetables, these you do get money for but no stats. Over all I really liked it, I would suggest getting it because also the tamatown that goes with it is a lot of fun. If you have anymore questions feel free to PM me. ^_^
Edit: I've had ever version of the tamagotchi to day so I could answer any questions you may have.