What kind of hard drive for the wii u?

I'm gonna order the basic 8GB wii u, and i want to add an external hard drive seeing as 8GB is not enough,

Does it need to be something special, or any kind will do?

Thanks.

this is a good idea if you're gonna be downloading full retail games, but if you'll just be downloading smaller games get the 32 gb one.

If you'll be doing the former, I would seriously call nintendo about what hdd to get, they have a list on their site but it's a bit outdated.

i'v been thinking to download everything because it is faster.. buying retail games for me means only online and that's around 2 weeks of waiting... because retail games here where i live are ridiculously expensive...

How much GB every game is? maybe i can buy it from the nintendo shop-->play-->delete--> install another?

It will not take space until i install it, no?

It depends on the game. Wind Waker HD is about 2.7 GB, Donkey Kong Tropical Freeze is 8GB, and Watch_Dogs comes in at a whopping 17GB. You can see how much space each game takes on its page in the eShop. Yes, you can buy and install a game, play it, and then delete it to free up space. You can redownload them again later at no additional cost. If you think this is something you'll be doing often, you may want to get one of these. Nintendo has a list of compatible hard drives on their web site. It won't take up space until you set software to download. Once you do that, the Wii U allocates the amount of memory it needs.

Believe it or not I plan on making my own hard drive. I'm not going all digital like you, so you might wanna buy a 1 or 2 TB external for your needs. I don't plan on buying that many digital titles but I still load up on indies and the like. So I am going to make a 320 GB external HDD from parts I order on Amazon. It should only cost me $35.