Timeline of the 21st Century

This is a timeline of the 20th Century in regards to events relevant to the XCOM Canon as observed throughout the gameplay of ChristopherOdd's gaming series. For reference of events outside the purview of the XCOM timeline presented here, please refer to.

2030s

 * For events taking place after the start of XCOM 2 in 2035, see Timeline of the War of Terran Liberation.