| May 2011 |
| 07/05/11 | The alliance STK (today: YBS) was founded. |
| Founding members::  Crazy hype. |
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| 09/05/11 | Joining of:Jabberwocky. |
|  The alliance reaches a population more than 100. |
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| 10/05/11 | Joining of:FriedrichEngels. |
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| 14/05/11 | Joining of:NoRules. |
| Leaving of:Jabberwocky. |
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| 16/05/11 | Leaving of:Crazy hype. |
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| 17/05/11 | Joining of:conroy. |
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| 18/05/11 | The alliance is now known as YBS. |
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| 20/05/11 | Joining of:bhatti002. |
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| 21/05/11 | Joining of:magnetic flux. |
| Leaving of:FriedrichEngels and NoRules. |
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| 22/05/11 | Joining of:lohmann, vidukia13 and McGee. |
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| 23/05/11 | Joining of:jinfreech2 and BlackFlame. |
| Leaving of:bhatti002 and magnetic flux. |
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| 24/05/11 | Joining of:HomerSimpson, benuxz, karun, Lontong, Marrsm and vaibhav. |
| The alliance reaches a population more than 1,000. |
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| 27/05/11 | Joining of:AFI, RusSandwich and zimanei. |
| Leaving of:vidukia13. |
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| 28/05/11 | Joining of:Astrix. |
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| 29/05/11 | Joining of:Fafhrd. |
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| 31/05/11 | Joining of:hhh_1. |
| June 2011 |
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| 01/06/11 | Joining of:Summer, Mogwai, Patrick Mullini, gembold and Timmah1. |
| Leaving of:zimanei. |
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| 02/06/11 | Joining of:peljavac. |
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| 03/06/11 | Joining of:citygirl. |
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| 05/06/11 | Joining of:Sendhil Kumar S. |
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| 06/06/11 | Joining of:Anger and Rhadamanthys. |
| Leaving of:lohmann and benuxz. |
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| 07/06/11 | Joining of:zimanei, menoreh and SANDKESSEL. |
| The alliance reaches a population more than 5,000. |
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| 08/06/11 | Leaving of:Summer. |
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| 11/06/11 | Leaving of:BlackFlame and Mogwai. |
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| 14/06/11 | Joining of:sd29389, Flirin and RAFABENITEZ. |
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| 15/06/11 | Joining of:Bidinster. |
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| 16/06/11 | Joining of:mark0 pwn. |
| Deletion of:sd29389. |
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| 17/06/11 | Joining of:Danders, yuber and bhanukir7. |
| Deletion of:Flirin. |
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| 18/06/11 | Joining of:mariatan, yojimbo, mowv, jowy and riesling. |
| Deletion of:peljavac. |
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| 19/06/11 | Joining of:ZIRDA and Permerga. |
| The alliance reaches a population more than 10,000. |
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| 20/06/11 | Leaving of:gembold. |
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| 21/06/11 | Joining of:razer. |
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| 23/06/11 | Joining of:jack.l.j and Sinix. |
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| 24/06/11 | Leaving of:Lontong. |
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| 25/06/11 | Joining of:SamOVar and u2slowe. |
| Deletion of:Timmah1. |
| July 2011 |
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| 01/07/11 | Leaving of:Sinix. |
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| 02/07/11 | Joining of:larrynm. |
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| 03/07/11 | Joining of:slack alice. |
| Leaving of:ZIRDA. |
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| 04/07/11 | Leaving of:Bidinster and Danders. |
| Deletion of:McGee. |
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| 06/07/11 | Leaving of:vaibhav. |
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| 07/07/11 | Joining of:roman11. |
| Leaving of:Marrsm RusSandwich and hhh_1. |
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| 08/07/11 | Leaving of:jinfreech2. |
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| 11/07/11 | Joining of:rogue1224. |
| Leaving of:jack.l.j. |
| Deletion of:slack alice. |
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| 12/07/11 | Joining of:Sektor and Ishido. |
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| 14/07/11 | Joining of:tazman. |
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| 15/07/11 | Deletion of:RAFABENITEZ. |
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| 16/07/11 | Leaving of:HomerSimpson. |
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| 21/07/11 | Joining of:papar. |
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| 23/07/11 | Leaving of:citygirl. |
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| 24/07/11 | Joining of:dag99. |
| The alliance YBS was canceled. |