A number of unannounced Wii U games will be released by the end of the year, Nintendo has revealed.

Speaking to investors, Nintendo's Satoru Iwata said that the firm was unable to unveil all of its games at this year's E3 gaming expo, and that there are a number of unannounced Wii U games planned for 2013.

...There are more unannounced Wii U titles coming by 2014. There was more info than could be released at E3. Wanted to ease owners' fears... — Cheesemeister (@Cheesemeister3k) June 28, 2013

Explaining why there weren't more games on show during this year's E3, Iwata said that he wants to cut the amount of time between game announcements and release dates.

Don't want to leave a long gap between announcement/release of new game types that would lessen the impact or allow competitors to copy... — Cheesemeister (@Cheesemeister3k) June 28, 2013

Nintendo unveiled Mario Kart 8 and Super Mario 3D World during its pre-E3 Direct conference, and demonstrated Super Smash Bros for Wii U and 3DS.

Super Mario 3D World will be released exclusively for Wii U in December, while Mario Kart 8 will reportedly launch next April.

> Read Digital Spy's Super Mario 3D World preview

> Read Digital Spy's Mario Kart 8 preview



Watch a trailer for Super Mario 3D World below: