This is a timeline of events relating to HD Universe.
- The Gambetti crime family is founded.
- Downtown Cab Co. is founded.
- Arthur Stubbs is born.
- Vincent Lupisella is born.
- Maureen McReary is born in Ireland.
- The only ten Z-Types are produced.
- Leonora Johnson born in the midwest
- Adriana Yanira Lopez is born.
- Vince Pelosi is born.
- The Stinger is first manufactured.
- Mikhail Faustin is born in the USSR
- Jim Fitzgerald is born in Acter
- Francis McReary is born in Dukes
- The founding members of The Lost MC meet while fighting in the Vietnam War.
- Jon Gravelli, Jr. is born.
- Manny Escuela born (South Bohan, Bohan)
- Dwayne Forge (North Holland, Algonquin)
- Gerry McReary born in Dukes
- The Vietnam War ends, on April 30 and the The Lost MC is created by several war veterans.
- Leonora Johnson is murdered
- Roman Bellic is born in Serbia.
- Elizabeta Torres is born (South Bohan).
- Gracie Ancelotti born in Alderney City.
- Terry Thorpe born in (Acter, Alderney).
- Bruce Kibbutz born in the Midwest USA.
- Niko Bellic and Florian Cravic are born in Serbia.
- Sonny Cangelosi dies, Jon Gravelli becomes boss of the Gambetti Family.
- March 15 Jolene Cranley-Evans dies in a tragic accident
- Patrick "Packie" McReary born (Dukes, Liberty City).
- Gordon Sargent is born (Dukes, Liberty City).
- Mallorie Bardas is born in Puerto Rico.
- Jason Michaels is born in Acter.
- Anthony Corrado is born.
- "Little" Jacob Hughes is born in Jamaica.
- Huang Lee is born in Kowloon, Hong Kong
- Michael Townley robs his first bank on the outskirts of Carcer City.
- Franklin Clinton is born. in South Los Santos
- Niko Bellic is twelve when his family gets first electricity.
1992 April 1
- The Bosnian war begins. Niko Bellic fights in the Bosnian conflict on the Serbian side at only fourteen.
- Dwayne Forge is jailed on crack distribution charges. Playboy X becoming the leader of North Holland Hustlers.
1995 December 14
- The Bosnian war is declared over with the signing of the Dayton Agreement, although many conflicts still continue. Around this time, Niko Bellic and his army unit are betrayed and killed except for him, Florian Cravic and Darko Brevic. Niko begins searching for the traitor.
2001 (September 11)
- The 9/11 attacks occurred. The attacks are frequently mentioned, especially in political atmospheres like Weazel News.
2003 (March 20 - May 1)
- Michael Townley, Trevor Philips and Brad Snider rob a bank in Ludendorff, North Yankton.
- Johnny Klebitz, Brian Jeremy and Terry Thorpe ride to Los Santos.
- Angels in America, No Love Lost and It's War all take place in that chronological order, when Jason Michaels is killed. In addition, It's War takes place around the same time or shortly after Roman's Sorrow, according to internet news.
- Blow Your Cover and Buyer's Market are one event.
- Three Leaf Clover and I Luv LC take place on the same day, when a bank is robbed.
- This Shit's Cursed takes place very shortly after Chinese Takeout, as during the latter Billy Grey arranges the Triad ambush on Johnny.
- Tom Goldberg is killed before Hit the Pipe, according to internet news.
- Roman's Holiday takes place very shortly before Hostile Negotiation; Roman Bellic is kidnapped, and is then saved by his cousin.
- Frosting On The Cake and Diamonds in the Rough are one event, and both right before Taking in the Trash.
- It's hinted during Not So Fast (when Gracie doesn't call Tony back) that I'll Take Her occurs in between Frosting On The Cake / Diamonds in the Rough (same event) and the diamond deal mentioned below. It also places the kidnapping shortly after Taking in the Trash from Niko's perspective.
- Museum Piece, Collector's Item and Not So Fast, the infamous diamond deal, and are all one event.
- No Way on the Subway takes place during Was It Worth It?, when Jim Fitzgerald is killed.
- Ladies' Night happens in between Ransom (because Tony is forwarded the photo) and She's a Keeper (because Gracie is at the original hideout).
- Diamonds Are a Girl's Best Friend and Ladies Half Price are one event.
- Dimitri Rascalov is killed before Departure Time.
2008 (October 3)
- The US government spends $700 billion to bail out several major banks, which *Gay Tony briefly mentions in the mission I Luv LC.
- The events of GTA Chinatown Wars take place. The GTA IV timeline may also go into early 2009 as many of the songs from EFLC are from 2009.