Ok, so I got this new game for my TI-84+ calculator called TI-CHAO GARDEN and in the game you get a virtual pet.

A Chao pet to be precise. I am not sure what it exactly is, but I think it looks like a fish. Anyway, in the game your "fish" has stats such as:Swim, Fly, Run, Power, Age, And Rings (Your money). In The Game you can buy Red, Green, Purple, Yellow fruits to "up" your Chao's stats. Next, we have the CHAO race...in this you can race your chao with the computer to get money. Another way to get money is by the game, "Treasure Hunt." This game is really similar to snake. You just run around and collect money. You have 1 min. The last thing is the environment. In the game like every pet, it poops and wants attention. In the enviroment section you can:
1) Clean Habitat
2) Link Battle
3) Save Game
4) Doctor
5) Back
6) EXIT.

Anyway I hope you liked the little description of the game and if you wish to download it to your TI- 83/+/84
Go to this site.
Then Ctrl + F and search CHAO.

 Enjoy! :)