Piracy is illegal so not including roms, you can download it at the Nintedo eShop for $39.99 (USD/CAD) plus tax if applicable.
You can't. It is a Nintendo 3DS exclusive game.
Yes You Can Get A Pikachu In Pokemon X and Y.
The Legendary Pokemon available in Pokemon X/Y are:Xerneas (X only)Yveltal (Y only)ArticunoZapdosMoltresMewtwoZygarde
Pokemon X and Y are sold at MSRP of $39.99 (CAD)
At the time of writing, there is no current way to trade or battle with previous generations in Pokemon X or Y. However, in December, Nintendo will be releasing a paid service called Pokemon Bank which will act as Pokemon X and Y's way of trading from previous generations (although this is only limited to Black, White, Black 2 and White 2). It does not appear that there will be any services that will allow you to battle with previous versions, however.
No, Y u no download
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Prof. Sycamore will give you the oval charm in Pokemon X and Y.
Pokemon capable of learning Psywave as an Egg Move in Pokemon X and Y are Latios (Pokemon) and Gastly (Pokemon).
You will first need to be connected to the internet. On the home menu of the 3DS, open the application named Nintendo eShopYou will then have to enter your Nintendo Network ID and password before being able to actually connect to the eShop. After you have connected, you can tap the search bar on the top of the bottom screen and type in Pokemon X or Y depending on which version you want.Hit search and the games will appear. Then tap the purchase button to buy the game. Once purchased, it will then ask to download now or download later.By tapping the Download Now, the 3DS will then begin to download the whole game. If you choose to Download Later, just go to the home menu and put the 3DS on sleep mode to download the game.
I believe X is stronger, but Y looks cooler.
*Mew is not catchable in Pokemon x and y, but you can get him online from wondertrades and such. Mewtwo however, is catchable and you can find him in the cave in pokemon village.