| June 2018 |
| 13/06/18 | The alliance C.O.B (today: C.O.B_PT) was founded. |
| Founding members::  B O O M B, eSTil, Aleks, K&K and straki. |
|  The alliance reaches a population more than 100. |
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| 14/06/18 | Joining of:Potato. |
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| 15/06/18 | Joining of:3M team. |
| Leaving of:Potato. |
| The alliance reaches a population more than 1,000. |
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| 16/06/18 | Joining of:ragby and P A S A R G A D. |
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| 17/06/18 | Joining of:Donat, bio, first, benita, tryndamere and PersPolis. |
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| 18/06/18 | The alliance is now known as C.O.B_PT. |
| Joining of:LazyToCreative, OhhEmGe, ali 2113, shine, baskon, mad max, dust and moriam. |
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| 19/06/18 | Joining of:nest, khers, hell and zebra. |
| The alliance reaches a population more than 5,000. |
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| 20/06/18 | Joining of:farsi and rgdubois. |
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| 21/06/18 | Joining of:salman1211, Rurik and from. |
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| 22/06/18 |  The alliance have their first conquest. |
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| 23/06/18 | Joining of:zoro1 and flare. |
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| 24/06/18 | The alliance reaches a population more than 10,000. |
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| 26/06/18 | Deletion of:3M team. |
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| 28/06/18 | Joining of:erq1331. |
| July 2018 |
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| 02/07/18 | Deletion of:Rurik. |
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| 03/07/18 | Joining of:chera. |
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| 04/07/18 | Leaving of:LazyToCreative and salman1211. |
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| 06/07/18 | Leaving of:Donat. |
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| 08/07/18 | Leaving of:OhhEmGe. |
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| 21/07/18 | Deletion of:tryndamere. |
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| 24/07/18 | Deletion of:first nest and chera. |
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| 29/07/18 | Deletion of:ragby bio shine dust khers hell zebra farsi from zoro1 and flare. |
| August 2018 |
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| 06/08/18 | Leaving of:rgdubois. |
| Deletion of:mad max. |
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| 10/08/18 | Leaving of:Aleks and straki. |
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| 13/08/18 | Deletion of:erq1331. |
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| 28/08/18 | Deletion of:moriam. |
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| 30/08/18 | Deletion of:ali 2113. |
| September 2018 |
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| 01/09/18 | Deletion of:baskon. |
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| 09/09/18 | Deletion of:PersPolis. |
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| 18/09/18 | Deletion of:benita. |
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| 26/09/18 | Deletion of:K&K. |