Program Archives
 Welcome to the TI-Basic Developer (TI|BD) Program Archives! We have a large variety of programs available for download, with program filtering and sorting based on genre and metadata, and will accept nearly any programs that you want to add to our archives. If you have questions, leave a post on the forums or read the FAQ. Happy gaming!

## Spin Pong

A fully optimized, release ready full version of pong. Includes the ability to spin the ball and also to select a difficulty level, which speeds up the ball and makes the AI smarter on hard.

## BATTLE

Battle against the computer with lasers across a field. Aim right against the unpredictable AI, or you might just get fried…

## Solitaire Encryption

This is the Solitaire Encryption algorithm that Bruce Schneier made for Neal Stephenson's book Cryptonomicon. Before, only a TI89 version of the program existed. This is for the TI83/84s. Give your calc some time, and eventually something will come out encrypted/decrypted. The outputs are stored in Str1 and the decryption deck is stored in ∟DDECK.

## Geometric Sequence

With the input of any two terms of a geometric sequence, and a desired term, the user can receive two outputs: the value of the desired term, and the sum of all terms from the first term to that one. For example: if you only knew the first and the third terms of the geometric sequence 1,2,4,8, and you wanted to find the fourth, you would first enter 1 and 3 for first and third terms, and then their respective values, 1 and 4. Then you would enter the term you wanted, 4 for fourth term, and two numbers would be displayed: 8 (the fourth term) and 15 (1+2+4+8).

## Binary Converter

A simple conversion system between bases 10 and 2.

## System Solver

This program will simplify nearly any radical expression in the form of the nth root of x by removing the perfect n factors from under the radical.

This program features very fast load times, index reduction, and imaginary simplifications.