Aliens Crucible
Aliens: Crucible was a cancelled role-playing game video game originally developed by Obsidian Entertainment for the PC, Xbox 360 and PlayStation 3 and was first announced by SEGA on December 13, 2006.

Aliens: Crucible would have been set apart by its unique gameworld. The dark, brooding Alien universe would have been unique to RPG games at the time.

When Aliens vs. Predator was announced in February 2009, SEGA announced that development on the game had been "indefinitely suspended". No reason had been given. It was reported that several employees at Obsidian Entertainment had lost their jobs. The game was officially cancelled in June 2009. Both SEGA and Obsidian confirmed it and Obsidian removed their Aliens RPG forum shortly after.