Because the game is often distributed in split archives (like the .part1.rar mentioned in your query):
: You must have all parts (Part 1, Part 2, etc.) in the same folder before extracting. Open only Part 1 with a tool like WinRAR or 7-Zip; it will automatically pull data from the other parts to create the full game folder. Femdom_Wife_Game_-_Zoe_1.61_F95_(Windows).part1...
: You must balance several hidden and visible stats: Because the game is often distributed in split