Nintendo DS homebrew is a way of writing programs for Nintendo DS. This page lists all the DS homebrew I have released. Source code is available for all of them. Click on the More info link below each one to view features, screenshots, and comments for that homebrew.
Robot Arm DS is a clone of a game written by Robin Ohm. You can get the original game, written in QBasic, here: http://www.euronet.nl/users/rkohm/software/download.htm. The object of the game is to program the robot to move around, take objects, and use objects in order to deliver the flag to the end tile. The hard part is that you have to write the program, then run it and watch the robot arm move. So it doesn't move while you are telling it what to do. You'll have to tell it to move around, pick up keys and unlock doors while making sure it doesn't run into itself or anything else.
DSbible is a Bible-reading app for Nintendo DS. It includes 4 translations (one of them French) and allows you to read, search, look up, and bookmark verses.
Tetravex DS is a Tetravex game for the DS. It's a puzzle game where you try to match the numbered edges of the tiles with the edges of the other tiles.
ds-trivia is an IRC trivia game without the IRC. It works much like a triviabot for IRC, but it's single player and offline.
DSlife is a Conway's Game of Life implementation for Nintendo DS.