DearS for the PlayStation 2 is a dating sim and visual novel game based on the manga by Peach-Pit. You step into the shoes of a character who begins living with the DearS, a group of alien girls. The game includes a map that allows you to explore different locations, interact with the girls, and trigger new events.

You play as Takeya Ikuhara, a high school student who, after living alone for some time, now shares his home with two DearS girls, Ren and Tina, who see him as their "master." The game is structured around daily routines, with different actions and locations unlocking based on the time of day and day of the week similiar to the Tokimeki Memorial series.