>>10 The first non-VN japanese game that I played for immersion was one of the Yugioh DS games. Even though small pixelated kanji can be tough to read, I thought it ended up being a good choice because I was already familiar with the general mechanics and the localized English card names and descriptions. Something comparable for you could be a good way to go. That said, if you're looking to input-max, gaming probably isn't the way.
The first non-VN japanese game that I played for immersion was one of the Yugioh DS games. Even though small pixelated kanji can be tough to read, I thought it ended up being a good choice because I was already familiar with the general mechanics and the localized English card names and descriptions. Something comparable for you could be a good way to go. That said, if you're looking to input-max, gaming probably isn't the way.