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