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