| October 2011 | ||
| 07/10/11 | The alliance G.U.M. was founded. | |
Founding members::  CaptFri. | ||
| 11/10/11 | Joining of:Alpsrider. | |
 The alliance reaches a population more than 100. | ||
| November 2011 | ||
| 10/11/11 | The alliance reaches a population more than 1,000. | |
| December 2011 | ||
| 10/12/11 | Leaving of:Alpsrider. | |
| March 2012 | ||
| 07/03/12 | Deletion of:CaptFri. | |
| The alliance G.U.M. was canceled. | ||