| Year | Terran | Zerg | Protoss | Xel'Naga |
| <10000000 bc | Xel'Naga come to the Milky Way Galaxy. The Xel'Naga rule many worlds in the galaxy and cultivate new species. | |||
| ? | The warring protoss tribes spread across the face of Aiur within a few thousand years, and eventually settled under a centralised rule. | The Xel'Naga engineer Aiur. They come back and see a race of beings that show signs of purity of form and essence. They name them the protoss. | ||
| ? | Protoss suspect Xel'Naga of treachery and attack their worldships. | The Xel'Naga saw that the protoss lost their communal link and purity of essence. They leave Aiur forever. | ||
| ? | The Aeon of Strife begins. It lasts for countless generations. Later, Khas will bring the protoss under the discipline of the Khala. | The Xel'Naga travel into the burning core of the galaxy and settle upon the ash world of Zerus. They pick an insignificant larvae called Zerg and steer its evolutionary processes. | ||
| ? | The zerg eventually absorb all life on Zerus. The overmind lures a space-faring species to it so that the zerg can leave Zerus. | Remembering their failure with the Protoss the Xel'Naga create a collective conscious to guide the zerg called the Overmind. | ||
| ? | The Overmind severs its link with the Xel'Naga and attacks their worldships. Zerus is now the tomb of the majority of the Xel'Naga race. | |||
| ? | The overmind ravages its way across the galaxy searching for the protoss and infesting other species. | |||
| 1500 | The Rogue Tribes are banished from Aiur. Later, Kalath Intercesion. | |||
| 1759 | Aldaris is born. | |||
| 1865 | Zeratul is born. | |||
| ~2100 | Human technology starts rapidly accelerating and population starts spiraling out of control. | |||
| 2102 | Fenix is born. | |||
| 2143 | Tassadar is born. | |||
| 2229 | UPL is founded. | |||
| ~2309 | UPL begins Project Purification. | |||
| ~2309-2349 | Terran Golden Age of Expansion. Doran Routhe accidentally sends the supper-carriers to the Koprulu Sector. | |||
| ~2337 | The super-carrier's engines reach critical Meltdown and emerge into real-space in the Koprulu Sector. Colonies are founded on three habitable planets. | |||
| ~2397 | The Confederacy develops the sub-warp engines. The three Terran colonies are reunited by space travel. | |||
| ~2485-2489 | The guild wars. | |||
| 2439 | The overmind discovers a new race called humanity that could help the zerg conquer the protoss. The zerg start heading for the Terran colonies. | |||
| ~2498 | Mengsk see's zerg in confederate holding pens and rescues Sarah Kerrigan from the confederates. | Tassadar finds the Zerg deep-space probes, forerunners of a grave new threat heading towards the k-sector. | ||
| ~2499 | Starcraft Precursor Campaign | |||
| ~2500 | Episode-I | |||
| Episode-II | ||||
| Episode-III | ||||
| Episode-V | Episode-IV | |||
| Episode-VI | ||||
| ~2504 < | Starcraft II | |||