Nintendo just released a free demo for WarioWare Gold.
WarioWare Gold is a new microgame collection for the 3DS family of systems. It releases later this month and makes use of the 3DS sensors like the mic, gyroscope, and more. This is the biggest WarioWare game. It has a fully voiced story mode as well and you can check out a demo for it now on the eShop for 3DS. Watch the demo trailer below:
WarioWare Gold releases on July 27 for the Nintendo 3DS family of systems.
Source: God is Geek