The Cat Lady is a dark adventure game and portrays an edgy view on depression and friendship. Susan Ashworth lives alone with only her cats to accompany her. When she decides to end her life, she finds she will be pestered in death - set a mysterious task of ridding the world of five twisted, worldly monsters known as the Parasites. The player will join Susan on her journey through the strange and often terrifying worlds of the living and the dead.

This side-scrolling third-person adventure game has many mature themes. Walking around is done using the cursor keys. When Susan passes an object of interest, it is highlighted and she can interact with it through the up arrow for a number of possible actions. Picked up items are stored in an inventory and can be used using the down arrow key. The entire game can be played with just the four cursor keys. In her search Susan often has to locate keys to open doors, but later in the game Mitzi can be used to help pick locks. At a certain point the player is also able to take control of a cat.