Akolyte

Arcatera is a role-playing game. Much of the gameplay is dedicated to exploring the town and its surroundings, talking to people and gathering information that will advance the story. The player can choose to start the game as any of the four available characters: a fighter, a thief, a magician, and a monk. A port for the Sega Dreamcast was developed, but never released.

Austin Powers: Mojo Rally is a cancelled racing game for the Sega Dreamcast based on the Austin Powers movie series.

Streets of Rage 4 is an unreleased game developed as a sequel to Streets of Rage 3. There have been at least two attempts at creating Streets of Rage 4, the first eventually seeing release in the re-branded form of Fighting Force, however a more "pure" attempt at a sequel, developed in-house by Sega was due for release on the Sega Dreamcast at one stage.

Frontier is an unreleased Sega Dreamcast network-focused sci-fi RPG. It would have been a Dreamcast-exclusive game, developed by Turbine Studios and published by Sega shortly after the console's launch, but was cancelled for unknown reasons.

Animastar Puzzle is an unreleased Sega Dreamcast puzzle game (related to Animastar).

Aqua Panic is an unreleased Sega Dreamcast puzzle game.