Kaen Seibo is a Japanese-style adventure which relies largely on conversations and the choices you make during them. However, the game also contains elements of Western-style adventuring. There are items that must be found, picked up and used at appropriate moments. There are areas where you can move through a 3D-like environment, viewing it from first-person perspective. During the dialogues, you also have commands that are accessible through a menu. There are also segments with a time limit.
A sequel to "Jet Coaster Dream", known as Coaster Works outside of Japan, "Jet Coaster Dream 2" expands the roller coaster building aspects of the first game to include more management of the park itself. The game was originally set for release in the US and Europe, but was cancelled in 2001 due to the discontinuation of the Sega Dreamcast.
DUX is a homebrew horizontal scrolling shoot-'em-up for Dreamcast, inspired by classic shoot-'em-ups such as Gradius and R-Type. The original release was self-published by HUCAST.Net in 2009, while an updated version titled DUX 1.5 was released in 2013.
This unreleased entry to the Castlevania saga featured 3D graphics and the ability to play as either Victor or Sonia Belmont in a quest to vanquish a countess who sought to bring count Dracula back from the dead once again.
Castlevania: Resurrection would have been the first Castlevania title developed by Konami's American division, but was cancelled on March 30, 2000.
Puzzle game on the Sega Dreamcast. Object of the game is to fill the playfield with more of your colored spheres than your opponent.
Get!! Colonies was originally released as "Hello Kitty: Lovely Fruit Park"... no... seriously, it was. The game was then re-skinned for a wider audience.
Blue Submarine No. 6: Time And Tide is an underwater-exploration game developed by Sega and released for the Dreamcast in 2000. The game follows the exploits of a deep-sea salvage crew as they recover treasure. The game includes FMV animation by Gonzo, a renowned Anime studio responsible for the original OVA.
A Dreamcast puzzler developed mostly by one Japanese student, Golem no Maigo (also known by its English translation "The Lost Golem") tasks you with guiding the king to the end of every stage by pushing walls around while also ensuring there are enough walls that remain intact to progress.