Suda51 explains why plans to port The Silver Case on DS fell apart

Coming from a Game Informer interview with Suda51...

GI: The Silver Case was, at one point, on its way to the Nintendo DS before being cancelled. Why didn't that work out?

S: One reason was the issue of an English localization. We wondered if a game with this much text could be localized correctly to be able to bring it to the West.

Another reason was the quality of the port. We actually had a full, working version, but we just couldn't figure out a way to make use of the DS’s main feature, the dual screens. Since we were working on several other games on the time we just didn't have the energy to figure it out. We actually thought about just handing the DS version out at Tokyo Game Show for free, but even that would have cost a lot of money, so we couldn't even do that either! Unfortunately, we then had to cancel to the project.