User blog comment:Kogath/Monster Hunter X Discussion/@comment-25706585-20150912202546/@comment-2194133-20150913001529

Is it rational to consider this game "Monster Hunter Portable 4th"? I know it isn't explicitly stated to be, but it borrows content from the previous 4 Portable titles while introducing its own features. Perhaps the change in naming convention was part of the split from Sony for that line of titles.