Krystals DS is the review of the first game I programmed for Nintendo DS. Using PAlib, Aslib and devkitPro R19 (Summer 2008), the game was developed in three weeks, participated in the Neo Compo of that year, remaining in 7th place. The problem is that both versions I used of PAlib and Aslib accumulated several important bugs, combined with the evolution of flashcards and that was compiled with a very old version (and modified) of libnds, has resulted in most of current flashcards play wrong with the best, very bad in most flashcards or directly or work on some. As this year I had little time to devote to new Ds things, I decided to redo the game from 0, using my library, the latest version of libnds and program it in C + + to test to see how it behaved in DS (both library and other DS games are programmed in C). Also, I changed all backgrounds now being animated in “Mode 7″ and the music, because I can not use mp3 format because Maxmod likes more MOD format. Also each game will be somewhat different, since the order of the backgrounds and music will be random. Playability are also new, being more difficult to perform combos, since we will never have a piece with two gems of the same color. You can get the project from this link: http://www.nightfoxandco.com/index.php/main-en/workinprogress-en/krystals-ds/?lang=en Regards!