| March 2011 | ||
| 18/03/11 | The alliance -OST- was founded. | |
Founding members::  minirokeur, KacemGuitare, lubna, Mimimandi, mephissto, zork and loup bleu. | ||
 The alliance reaches a population more than 100. | ||
| 19/03/11 | Joining of:aliasso35, Arg and Utopus. | |
| 21/03/11 | Joining of:Bobsam and bobosse64. | |
| Leaving of:minirokeur KacemGuitare mephissto aliasso35 Utopus Bobsam and bobosse64. | ||
| The alliance reaches a population more than 1,000. | ||
| 22/03/11 | Joining of:arlissa. | |
| Leaving of:lubna Mimimandi zork loup bleu and arlissa. | ||
| May 2011 | ||
| 07/05/11 | Deletion of:Arg. | |
| The alliance -OST- was canceled. | ||