DS downloadable play is pretty much where anda can download what another person with a DS has, anda can use wireless conection to play games with another person with a DS, It's a cool system! anda need to have some one else with a DS to use DS downloadable play, anda need anda atau the other person to pick the option on your game, then the other person to wait with the connection oleh picking DS down loadable play button. (Sorry if my spelling atau grammer's wrong, I'm tired! XD)