Space Invaders Extreme
 

I picked up the DS version yesterday and it's really good. I heard the PSP version is a little better, but you can't go wrong with either.

Game Trailers can explain why you should play this better than I can:

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Anyone else pick it up or plan to?

Yeah, I got the jap version quite a while back and it's fun as hell.

Do you have it for DS or PSP? I wish North America got the paddle for the DS version.

DS