The .rar extension indicates a compressed file created by WinRAR. When a file is named with "," it means the total game data has been split.
Serialized in Tech Gian magazine and later published as a standalone volume. Imouto.Paradise.2.part1.rar
Harem, Incest, and "Nukige" (games focused primarily on sexual content). Imouto.Paradise.2.part1.rar
As a visual novel, it focuses on reading a branching narrative and making choices that lead to different heroine-specific endings or a "harem" ending. Imouto.Paradise.2.part1.rar