Having trouble finding this one game (i think it was a pixel sex game but i dont remember) where the goal was to impregnate every girl in the game. You had to raise certain stats into order to talk to girls to seduce them or to get more information about other parts of the game. Girls had different conditions for having sex with the mc. For example one girl at the park wouldn't have sex with the mc unless you were currently have sex with her best friend right next to her.