Konami intentionally keeps multiple Silent Hill projects in development isolated from one another to prevent cross-contamination of ideas and designs among teams. Jon McKellan, director of Silent Hill: Townfall, stated that his team usually only learns of other projects after they are officially announced; even after public reveal, teams do not preview each other's development progress.
Series producer Okamoto and his team review all titles collectively. If a concept, visual design, or overall direction is too similar to another project, the relevant team will be asked to make adjustments, though they may not be told specifically which title it conflicts with. McKellan cited an example where a development team changed their approach because an enemy's visual design was deemed slightly too similar to that of another title.
McKellan believes that this management approach does not stifle creativity. Teams are not required to adhere to a unified phase plan; they can maintain a high degree of creative freedom within defined boundaries, while series-level oversight prevents significant overlap between different projects.
The Silent Hill: Townfall development team did not see Silent Hill f until a few months before its release, subsequently discovering that the two titles differed significantly in experience and setting, with no obvious risk of overlap. McKellan also noted that this limited information isolation allows team members to retain the freshness of experiencing other titles for the first time, just as series fans would.