Advent Rising is a science fiction action adventure developed by GlyphX Games and published by Majesco for Xbox and PC in 2005. As we can read on Wikipedia, Advent Rising was the first in a planned trilogy which also saw the development of Advent Rising PSP, a side story that took place at the same time as the first game. However, the first game’s retail performance fell short of expectations. By the end of 2005, Majesco Entertainment had completely revised its business plan and canceled plans for future Advent Rising games. Advent Rising was an ambitious project, but even the only released chapter was cut and changed before the final version.
Greg was able to find a lot of unused content in Advent Rising that is still accessible through the PC version’s console. This includes content that was promised in trailers, E3 demos, and the like, but cut for various reasons. Much of the content still exists in partially usable form once you spawn it into the game.