Try Pressing "X" when the game is selected in the menu, that deletes games or saves on most DS firmwares.
you can try stuffs4kids.com
well the cheapest ive seen is £30 without a card but there might be cheaper, here is the url. http://www.consoleup.com/shop/Console/Cyclo-DS/CycloDS-Evolution/?gclid=CNSRip_wsZMCFQEnGgodJ3YSow
The R4DS is the most popular flash cart, selling much more than any other The CycloDS evolution has onboard memory for firmware, so it works straight out of the box.
We can delete Nokia 1208 Games by using data cable
i wish to delete my games account
If you delete your DSi store games, you can redownload them from the DSi store itself.
To delete games in Yahtzee with Buddies, open the app and navigate to the "Games" tab. Find the game you want to delete, swipe left on it, and tap the "Delete" or "Remove" option that appears. Confirm the deletion if prompted. This will remove the game from your active games list.
To delete archived Lexulous games, first, log into your Lexulous account and navigate to the "Archived Games" section. Once there, you should see a list of your archived games. Select the game or games you wish to delete and look for an option to remove or delete them. Confirm the deletion when prompted to complete the process.
use CycloDS
When you select a singleplayer game, you have the option to delete it. It is near "rename", it says "delete".
when all the games are loaded go to settings then press delete all games and it will delete all of them but you cant get them back so careful hope i helped if i didnt then please contact me thanks.
You can only delete save games through windows as far as I know...