Splits are handled on a case-by-case basis, and I must tell you I have not made all of them. If there are issues, I will investigate.(posted 8870 days ago)A game cannot be split based on difficulty levels alone, but there can be limited exceptions. With Star Luster, I determined the play modes were really easy, medium, hard in disguise. In retrospect, it never should have been split, but at the time of the split there was only one INP for the training level, so I gave the benefit of doubt. After reviewing the INPs from all three levels, I decided to recombine them.
In general, if a game has a VS mode, has multiple courses, or game play is SIGNIFICANTLY different, the game will be split. However, you do bring up a good point about Pang!3 and Block Block, so I will review those games and combine appropriately...