| December 2019 | ||
| 17/12/19 | The alliance OSEF was founded. | |
Founding members::  Serval, elfo, freya and Canartichot. | ||
 The alliance reaches a population more than 100. | ||
| 21/12/19 | Joining of:Jean-Claude. | |
| 22/12/19 | Joining of:balzain. | |
| The alliance reaches a population more than 1,000. | ||
| 23/12/19 | Joining of:theodem14 and feedback. | |
| 25/12/19 | Leaving of:freya and feedback. | |
| 26/12/19 | Joining of:Geralt De Riv. | |
| 27/12/19 | Joining of:Glor. | |
| Leaving of:balzain. | ||
| 28/12/19 | Leaving of:Serval and Canartichot. | |
| 29/12/19 | The alliance OSEF was canceled. | |