This is from the tamagotchi wiki. If you need more information about your tamagotchi v.2 then you can check it out. I don't have the tamagotchi v.2 (sadly), but I hate it when I don't get replies to my post so I will do my best to help a fellow tamagotchi lover.
Jump- there are 3 circles, the player presses the button on the same side as the circle when it turns black. The player has to press the button in 0.5 seconds. The quicker the button is pushed, the further the tamagotchi jumps.
Bump- A bar will move at the top of the screen the player has to push a button when the bar is high up The tamagotchi will fight with another tamagotchi. There are 8 rounds.
Heading- Balls will fall from the top of the screen. The player has to move the character where the ball is falling and make it jump. 20 balls fall in one game.
Slots- there are 3 slots the player has to press down when a good slot appears. x is bad, o is excellent and triangle is good.
hopefully I helped a little. Try and play with it a little bit and see if you can figure the games out after reading this. As I said the Tamatchi wiki (where I got this info) can help you with your tamagotchi.
If these are games from a different version then I'm very sorry. I really hope this helped. Have fun. Merry Christmas.