There are three possible endings to Deus Ex. Which one in particular plays out depends on the actions taken by JC Denton (the player character) in the final location of the game, Area 51. As of the sequel, Deus Ex: Invisible War, all of the possible endings are at least partially canonical. The canon "decision" is for JC to merge with the Helios AI in the "Benevolent Dictator" ending, but the merge is unsuccessful. This still results in the failure of Area 51, a technological blackout, and the death of Bob Page regardless. In this way, the results of all three endings, if not the choice behind them, are somewhat canonical.