Sisterly Lust tells the story of a young man who is forced to return to his home after a long absence. After the death of his father, the main character has to move into the house with his sisters Lisa, Bella, Rachel and Susan. Under the control of the player, the protagonist begins a new life in such an interesting environment, consisting of beautiful women. As he communicates with new neighbors, he will have to uncover their identities, learn secrets, and also start a romantic relationship (with one or several at once).

Sisters' Lust is entirely built on a system of choices. The development of the storyline and relationships with characters directly depend on the decisions. Each girl has 2 parameters – trust and corruption. New scenes will open when they reach certain indicators. Therefore, it is important to build dialogues correctly, maintaining a positive attitude towards the main character from all participants in the story. Otherwise, the game can quickly end.

The project contains an abundance of content designed for long hours of passage. The dialogue tree has many branches. All the main characters can be called a gamer. In addition to them, there are many other girls around the main character, each with her own story and character. Building his behavior and manners in the right direction, the hero is able to achieve any of his stepsisters. However, this will require time and attention. To get the attention of all 4, it may take several attempts.