What are the most useful tools and/or fun games for the TI-83 Plus?

For games, I liked tetris and the built-in Puzzle Pack. There are apps to solve specific problems (e.g you use quadriat to solve problems with quadratic) . TiCalc has an amazing collection of programs and games for the Ti-83+ . Just remember, do not max the memory on the TI-83 (because then the calculator becomes really slow and it takes forever to graph)

Oh, do I have memories of playing 2-player Tetris with Jon Lim in class during Pre-calc. Those were the days…

It’s totally a game called Nibbles. I used to play that game while sitting at the back of math class.

Well, I don’t have any direct links, but there are several cool things. One program allowed you to type in lower case by hitting the alpha button again, as a third toggle. Very neat and lightweight. Also there are many fun games, chiefly, Asteroids v 0.99 (I think it was called), which featured classic and enhanced mode (enhanced mode gave you a life bar and collectables of health and money to spend on upgrades), difficulty settings, and highscores. Also fun is Pong, Minesweeper, Falldown X, and this pretty good SMB clone that had a level editor too. Also of very cool note: If you liked Block Dude from PuzzPack, you’ll love the game “Trapped!” It’s literally the exact same thing, but with new items like bombs and only pushable blocks and ladders and new puzzles and the ability to look around and turn from one position. Very cool. And no, I don’t think you can have problemsolving like the 89…I suppose you could look around on TiCalc as someone previously posted…that’s where you get pretty much everything I’ve talked about. Have fun!