On August 21st through the 25th, Gamescom will commence in Europe, and for the very first time, gamers will have a chance to play Pokemon X and Y in the EU. Nintendo also has revealed that there will be playable 3DS demos for Professor Layton and the Azran Legacy, as well as The Legend of Zelda: A Link Between Worlds.
But while the 3DS has no shortage of incredible games in general, it looks like Nintendo will be focusing on the Wii U, with tons of demos on hand. In fact, Pikmin 3, Wonderful 101, Wind Waker HD, Sonic Lost World, Wii Party U, Donkey Kong Country: Tropical Freeze, Super Mario 3D World, Wii U Karoake U, and Mario Kart 8 will be readily available.
That's quite a bit of games, some of which are pretty far off, so it should be a great chance for many people who missed E3 to play them.
Pokemon X & Y [Nintendo Life]