Deus Ex endings

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) during the final mission of the game, which takes place in Area 51. The sequel, Deus Ex: Invisible War, establishes that all of the possible endings are at least partially canonical. The names for the different endings below are from the mission objectives of the final mission.
==Merge with Helios AI (Helios' plan)==
thumb|250x250pxSummary: Merge with Helios, creating a hopefully benevolent cybernetic dictatorship.
Requirements: Deactivate the uplink locks, engage the primary router, and proceed to merge with Helios.
Cutscene: JC Denton speaks with Helios, is convinced to merge with it, and proceeds to rule the earth as an omniscient, objective, absolute ruler.
==New Dark Age (Tracer Tong's plan)==
thumb|250x250pxSummary: Embrace Tracer Tong's plan to destroy global communications and start a new dark age without any of the burdens of a corrupt civilization.
Requirements: Cut the coolant flow to the antimatter reactors, disable the failsafe mechanisms, and activate them to initiate a meltdown event.
Cutscene: Area 51 is destroyed by the massive blasts, cutting world communication networks and destroying both Bob Page and Helios. This thrusts the world into a technological blackout, but also frees it from media control by the Illuminati.
==Join Illuminati (Morgan Everett's plan)==
thumb|250x250pxSummary: Kill Bob Page by destroying the four blue generators, and rule with Morgan Everett as one of the Illuminati.
Requirements: Neutralize the four blue fusion reactors and trigger the Infusion Control Switch.
Cutscene: JC Denton and Morgan Everett discuss plans for the future in a world where the Illuminati rules unopposed. This shows JC is at least complicit in their plans, if not actively collaborating with them.
==Canonical ending==
According to the events of Deus Ex: Invisible War, all three endings are at least partially canonical. The official guide for Invisible War confirms that JC Denton performed the actions of all three endings: Nonetheless, JC's actions did not fully result in the intended consequences. Although JC did merge with the Helios AI, the merge was not fully successful, as JC fell into a coma-like state. Additionally, it is also stated in the guide that the Illuminati lost all means of controlling nations and peoples and that JC and Paul Denton were powerless to protect governments from warlords and from the damage already done by the MJ-12 shadow government, indicating that the Illuminati were unable to consolidate power following the destruction of Area 51. JC and Helios later formed ApostleCorp, which opposed the Illuminati, as seen in Invisible War. 
The canonicity of all three endings was also confirmed by Invisible War's game director Harvey Smith, who felt that the combination of endings was more interesting than any of the three endings alone.Turner, Benjamin (2003-09-08). "Previews - Deus Ex: Invisible War". GameSpy. Archived from the original on 2012-09-05. Retrieved 2017-08-01. 
Invisible War also establishes that JC's destruction of the telecommunications infrastructure resulted in the Collapse. However, communication and globalization were eventually able to return, as seen in Invisible War.
==Trivia== 
*In an hour-long narrated playthrough of Deus Ex with Sheldon Pacotti and Chris Norden, Warren Spector noted how he originally wanted a fourth ending to be possible in the game.Let's Play Deus Ex with Warren Spector, Sheldon Pacotti and Chris Norden This fourth ending would have allowed JC to side with Bob Page and Majestic-12, presumably letting Page merge with Helios and killing Everett. This is mentioned around 49:20 in the YouTube video.
*Some evidence of this ending still persists in the final game, with Page at one point pleading with JC by offering him total control of Europe (this would apparently have been a serious option had the last ending been included). This corroborates some rumors which have circulated since the game's development, which suggest that originally Deus Ex would have included a second "MJ12 Loyalist" path to completion, which was later scrapped. The reason for the omission of this fourth ending is a lack of time.Harvey Smith et al. (Feb 2001*). "Behind the Scenes Look in the Making of Deus Ex" (archived). DeusEx Machina (interview). Archived 2001-04-09. Other interviewees: Steve Powers, Chris Todd, Sheldon Pacotti, and Ricardo Bare.
*Tracer Tong's "New Dark Age" ending has two cut lines. The following text and audio for the cut lines can be found in the game files (the cut lines are highlighted in bold):These lines are found in the "Endgame1" conversation in the M_99_EndGame.con file located in the conversations package, and are linked to two sound unused files, Endgame1\TracerTong02 and Endgame1\TracerTong03. The conversation file includes a "Jump" command that causes the game to skip over these lines.
::...J.C....the net's going...the net's going black, J.C.... ...the Aquinas protocol...hear the howling?... ...the system is going down, all across the globe... ...no more infolinks, transmissions of any kind...we'll start again, live in villages...if you receive this, if you survive, then find us...find us...
:: 
*The "Merge with Helios" ending is based on the ending concept in the Shooter: Majestic Revelations precursor, in which JC Denton has the option of merging with an AI entity called Adam onboard a space station named "Helios."
==References==
Category:Deus Ex
Category:Gameplay
Category:Lore