What is "winta"

WINtA is a music video game for the iOS platform, developed pro bono by Masaya Matsuura’s NanaOn-Sha Studio and Triangle Studios, published by ngmoco under the OneBigGame charity initiative. Profits go to Save the Children and the Starlight Foundation

Matsuura-san explained in an interview that through WINtA and the OneBigGame initiative, he wishes to "contribute to the games developer society and communities".