Normally, you can play new DS games on old DS. But if the games says for DSi only, or for 3DS(will be pubulished soon) only,the it can not play on old DS.
Yes, the NDS lite can play all DS games
It can play GameBoy games and DS games.
Most likely, the DSs aren't any different.
No it is IMPOSSIBLE to play DS games on the Wii but you can play Nintendo Gamecube games with the Gamecube controller
an English ds plays American games, so i say an Australian ds would
Yes, DS consoles are not region locked.
Yes. DS games are not region locked, though there might not be full compatibility with any online functions of the game.
yes
Yes.
Yes they will games from all over the world will work its multi regional
Yes, DS games are not region locked.
Yes. The DS lite is not region locked, a Japanese model will play DS games from the US.
Yes. DS games are not region locked.
Yes, they do since Nintendo DS games are not region locked
Yes, regular DS games are not region locked.
Yeah, theres no region lock on DS's