Some of you maybe recognized that there is a new Flash-Linker & Rom for our all beloved GBA. It seems that the flashing speed is rather fast and the whole thing is easy to use (regarding the description and product details). If you want to play all the avaliable homebrewn roms on your real GBA, this might be a way for you. Read more about GBA Hardware News XG-Flash 2 (GBA misc)
Another game I missed is "LodeRunner" by Consolecoder. This game has been released on the 27th December 2002 and is based on... guess ;) (This project is open source!) Read more about LodeRunner GBA v0.1 (GBA Game)
"Klass of 99" is an adventure game for the GBA. This game has been released a few days ago. More information and the download could be get from the official page (link below). Read more about Klass of 99 v1.0 (GBA Game)
SatanicFreak recently released a Tetris game for GBA. You can get the download from his page. Thanks to GBAdev.org for the news. Read more about Blocks (GBA Game)
Nicolas Beck, Sebastien Bizet, and Bertrand Osdoit created a Bombermanclone. The current version avaliable on GBAdev.org contains one level with one monster but unlimited bombs. The full source code is enclosed with the download. Read more about Bomberman (GBA Techdemo)