Where can you make game suggestions for Nintendo?

if living within the UK it is possible to make a suggestion via the post all you need to do is send a letter with your name age and as usual an address in the top corner of the letter this is the address to the UK users:

Codestorm House

Walton Road

Farlington

Hampshire, PO6 1TR

hope i helped however it is annoying because of the stupid postal strikes though i mean the head of royal mail is receiving more money for striking but those on benefits or having pensions arent thanks for listening.