Thanks PrincessInOz. It should play here then
I was aware of the Wii games not playing here. So we just stock up on DS games as they work anywhere.
When we were at WDW last time, my DS (and not the machine, my son

) lost his bag that had his DS and all of his games in it, weird thing was, we left it in the room at check out

and it hadn't been used the whole time we were at WDW other than in the room, he never took it out, so it was definately left in the room. He had been collecting games for years and had bought a heap whilst we were there, he had about 20 + games

. All gone!
He realised that is was gone as we were leaving the hotel, so we rushed back in and somebody went to check the room but the room had already been cleaned and no DS bag, the called housekeeping and no bag, called lost property, no bag. So I left a note there for lost property as we knew it was in the room, so hoped it would turn up. I thought it may have been thrown out in the rubbish as we did have a few bags of rubbish and a cheap stoller we left behind (on purpose), so it must have been mixed up in all of that. But unfortunately it was never found as I did leave our address for it to be sent.
He was so upset, so when we got to Hawaii we were able to get a new DS and many of the games he had lost.
But long story short, we were very relieved that DS games are universal and so much cheaper in the US than here