De-Ja is a Japanese adventure game for the TurboGrafx CD featuring a menu-driven interface that presents verb commands such as Examine, Talk, and Use. Players interact with various elements to uncover the story, progressing by gathering information through context-specific interactions. The game includes scenes with nudity and mild sexual content, contributing to its mature themes.
De Ja is a Japanese-style adventure. At every screen, a menu with verb commands appears at the bottom. The commands include Examine, Talk, Ask, Take, Use (an inventory item), Move, as well as other context-specific commands that appear on some screens. Choosing a verb usually leads to an object sub-menu. Typically, the game's story advances once the player has gone through most of the commands and acquired the needed information. The game has some scenes with nudity and mildly depicted sexual situations.