Excellent case
The case is compact, strong and perfect for carrying even in your pockets. The price is a tiny bit high but is worth it.

One of the bes if not the best
Hori knows what they are doing when designing a case product. DS Card case is not only compact but quite sturdy as well, protecting DS games within. Plastic used in the case isn't cheap quality and has a sort of matte finish around the edges while the centre is clear, so that you can see the games in the first and last "leaflet" of the case.
I've bought so two of these and I will be purchasing at least one more. This is the best item for protecting DS games; sturdy, compact and well designed.

Fantastic Case for DS games
This plastic is nice and sturdy, holds 16 DS games. The only con is that it might be a little thick if you try to put it into your pant's picket. Nevertheless, I remember this case to any DS gamers!

Practical and Affordable
Probably the easiest and safest way to carry around your DS games without their actual cases. Featuring 16 slots for gamecards it is also sturdy enough to keep them out of harms way. However if your thinking that 16slots may make it a bit large youd be mistaken as it can fit quite easily into your pocket or bag without taking up too much room.

So Id highly recommend picking one up. Theyre also available in other colours if your looking for something different :)

STORAGE!
I bought two of 'em. It's great and it's fits in your pockets perfectly. It's a good case that can hold quite a lot of your DS games. It's cheap and it worth it. Good purchase in my opinion. =D