| February 2018 |
| 08/02/18 | The alliance MOSSA (today: KOSSA) was founded. |
| Founding members::  LEZZOLAND. |
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| 10/02/18 | Joining of:xSfrollo. |
|  The alliance reaches a population more than 100. |
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| 12/02/18 | Leaving of:xSfrollo. |
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| 13/02/18 | Joining of:xRios, Hardwell and ILPUMA. |
|  The alliance have their first conquest. |
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| 14/02/18 | The alliance reaches a population more than 1,000. |
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| 16/02/18 | Joining of:range. |
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| 18/02/18 | Joining of:Dacia. |
| Leaving of:Dacia. |
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| 20/02/18 | Joining of:BaDstar. |
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| 21/02/18 | Joining of:Claudio. |
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| 22/02/18 | Joining of:Peponia and Rhobar III. |
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| 23/02/18 | Joining of:kiot. |
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| 24/02/18 | Deletion of:Claudio. |
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| 26/02/18 | Joining of:Kazzynkul. |
| Leaving of:xRios. |
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| 27/02/18 | Deletion of:Peponia. |
| March 2018 |
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| 02/03/18 | Joining of:rampi. |
| Deletion of:range. |
| The alliance reaches a population more than 5,000. |
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| 04/03/18 | Joining of:spartacus and IlBruco. |
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| 05/03/18 | Joining of:aran. |
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| 08/03/18 | Joining of:Experticus. |
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| 09/03/18 | Leaving of:IlBruco. |
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| 15/03/18 | Joining of:pietronus. |
| The alliance reaches a population more than 10,000. |
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| 20/03/18 | Joining of:zot. |
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| 24/03/18 | Joining of:Procopius. |
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| 25/03/18 | Joining of:JointBreak. |
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| 26/03/18 | Leaving of:JointBreak. |
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| 29/03/18 | The alliance is now known as KOSSA. |
| Joining of:Daedraman, Omeka, Heisenberg, NUNI, The Skull Girl, Scemo, Felics, Matteo, orsobuono, koa, THE KING, AleMagno,  Liuton, ARAGON, Alexander93, Bubut and sozzo. |
| Leaving of:The Skull Girl. |
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| 30/03/18 | Joining of:Attivato. |
| April 2018 |
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| 01/04/18 | The alliance reaches a population more than 50,000. |
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| 02/04/18 | Joining of:ARIOVISTO, Amilcare and Nic88Bg. |
| The alliance has done over 5 conquests. |
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| 03/04/18 | Joining of:Sibarius and Mafez. |
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| 05/04/18 | Joining of:SISSI. |
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| 09/04/18 | Leaving of:AleMagno. |
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| 10/04/18 | Joining of:flo. |
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| 12/04/18 | Joining of:Regina Asia. |
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| 16/04/18 | Leaving of:Experticus. |
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| 17/04/18 | Leaving of:zot. |
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| 18/04/18 | Leaving of:Hardwell. |
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| 19/04/18 | Joining of:Asterix. |
| Leaving of:flo. |
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| 22/04/18 | Joining of:abe. |
| Leaving of:Matteo. |
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| 24/04/18 | Joining of:Boemondo. |
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| 30/04/18 | Leaving of:Nic88Bg. |
| May 2018 |
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| 01/05/18 | Leaving of:BaDstar. |
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| 03/05/18 | Joining of:CESAR LIVENTINO and BOH. |
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| 04/05/18 | The alliance reaches a population more than 100,000. |
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| 08/05/18 | Leaving of:Felics orsobuono THE KING and ARAGON. |
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| 09/05/18 | Leaving of:Heisenberg koa Bubut abe and CESAR LIVENTINO. |
| The alliance has done over 10 conquests. |
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| 11/05/18 | Leaving of:Alexander93. |
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| 13/05/18 | Leaving of:Rhobar III and Sibarius. |
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| 15/05/18 | Leaving of:Procopius. |
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| 16/05/18 | Leaving of:ILPUMA. |
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| 17/05/18 | Leaving of:Regina Asia. |
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| 20/05/18 | Deletion of:LEZZOLAND. |
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| 21/05/18 | Leaving of:Omeka and Attivato. |
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| 22/05/18 | Leaving of:Mafez. |
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| 23/05/18 | Joining of:Bubut. |
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| 31/05/18 | Leaving of:kiot. |
| June 2018 |
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| 01/06/18 | Leaving of:BOH. |
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| 04/06/18 | Leaving of:SISSI. |
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| 20/06/18 | Leaving of:Boemondo. |
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| 25/06/18 | The alliance has done over 20 conquests. |
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| 27/06/18 | Leaving of:spartacus. |
| July 2018 |
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| 05/07/18 | Deletion of:sozzo. |