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