| July 2017 |
| 01/07/17 | The alliance Chi (today: SECEN) was founded. |
| Founding members::  maimai, jj9654, Gay, Johnson, jimmy30040, Renne, Chi, Lafrente, Irelia, Zed and moment. |
|  The alliance reaches a population more than 1,000. |
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| 03/07/17 | Joining of:Cycy. |
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| 04/07/17 | Joining of:Nightball, Singcara, kris88, meowcat, SSEES, goutnow, AXEoh, lionbat, yahho and UsaUsa. |
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| 07/07/17 | Joining of:kadarre. |
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| 08/07/17 | Deletion of:Johnson. |
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| 10/07/17 | Deletion of:yahho. |
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| 11/07/17 | The alliance reaches a population more than 5,000. |
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| 12/07/17 | Joining of:LpGoodEat. |
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| 13/07/17 | Joining of:poonken. |
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| 14/07/17 | The alliance is now known as SECEN. |
| Joining of:wakeupdiuwest, Goofy, bellaismywife and seveneleven. |
| Leaving of:Nightball. |
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| 15/07/17 | Joining of:iPS, Wounder and United. |
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| 16/07/17 | Joining of:Nightball, CNM and ATGun. |
| The alliance reaches a population more than 10,000. |
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| 17/07/17 | Joining of:BLUEWINDS, parok, TEACHER and BOMA. |
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| 20/07/17 | Deletion of:Goofy. |
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| 21/07/17 | Joining of:CLASS. |
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| 22/07/17 | Joining of:Denmark Juno. |
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| 23/07/17 | Joining of:DNJill and kitty. |
| Leaving of:kadarre. |
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| 24/07/17 | Joining of:145ET and Annolp. |
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| 25/07/17 | Joining of:WW91, shhx2005 and YS33. |
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| 26/07/17 | Joining of:MBT and 5CT. |
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| 29/07/17 | Joining of:Heyman. |
| August 2017 |
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| 02/08/17 | Joining of:TxxMO and nosedom. |
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| 03/08/17 | Joining of:StSam, aqua and LKK. |
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| 06/08/17 | Joining of:BLUESKIN and POPCORN. |
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| 07/08/17 | Joining of:Olenotao and WATERMAN. |
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| 10/08/17 | The alliance reaches a population more than 50,000. |
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| 11/08/17 | Joining of:FLAG, XI89 and Mr. Right. |
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| 12/08/17 | Leaving of:YS33 and XI89. |
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| 14/08/17 | Joining of:Watashi uggla. |
| Leaving of:wakeupdiuwest bellaismywife seveneleven BLUEWINDS TEACHER WW91 StSam aqua POPCORN Olenotao FLAG and Mr. Right. |
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| 16/08/17 | Leaving of:Wounder and kitty. |
| Deletion of:jimmy30040. |
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| 18/08/17 | Deletion of:SSEES goutnow AXEoh and lionbat. |
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| 21/08/17 | Leaving of:maimai jj9654 Gay Renne Singcara kris88 meowcat UsaUsa LpGoodEat iPS United Nightball CNM parok BOMA CLASS 145ET MBT Heyman TxxMO nosedom LKK WATERMAN and Watashi uggla. |
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| 23/08/17 | Deletion of:moment. |
| September 2017 |
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| 03/09/17 | Leaving of:shhx2005. |
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| 04/09/17 | Leaving of:Cycy ATGun Denmark Juno DNJill and Annolp. |
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| 06/09/17 | Leaving of:poonken. |
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| 07/09/17 | Leaving of:Irelia. |
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| 16/09/17 | Leaving of:Chi. |
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| 25/09/17 | Leaving of:Lafrente. |
| November 2017 |
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| 06/11/17 | Deletion of:5CT. |
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| 13/11/17 | Deletion of:BLUESKIN. |
| January 2018 |
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| 24/01/18 | Deletion of:Zed. |
| The alliance SECEN was canceled. |