| December 2009 |
| 27/12/09 | The alliance ORYERBIS (today: LEON) was founded. |
| Founding members::  orsonis and maolo. |
|  The alliance reaches a population more than 100. |
|
| 28/12/09 | Joining of:haan and EDFA. |
|
| 29/12/09 | Joining of:CESAREO, zumbador and joosuue__10. |
| Leaving of:zumbador. |
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| 30/12/09 | Joining of:Thunderstorm and URSS. |
| January 2010 |
|
| 01/01/10 | Leaving of:haan and EDFA. |
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| 02/01/10 | Joining of:dyj and gastoreño. |
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| 03/01/10 | Leaving of:maolo and URSS. |
|
| 04/01/10 | Joining of:miss_mery and Patriaka. |
| The alliance reaches a population more than 1,000. |
|
| 05/01/10 | Joining of:angeloguvo and hardcoreta. |
| Leaving of:miss_mery. |
|
| 09/01/10 | Joining of:miki_carmo. |
|
| 11/01/10 | Leaving of:hardcoreta. |
| Deletion of:Patriaka. |
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| 13/01/10 | Leaving of:dyj and miki_carmo. |
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| 15/01/10 | Leaving of:CESAREO. |
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| 20/01/10 | Joining of:emac. |
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| 25/01/10 | Deletion of:gastoreño. |
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| 28/01/10 | Joining of:divertido. |
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| 29/01/10 | Joining of:Joselita and Dark-Angel. |
| February 2010 |
|
| 03/02/10 | Leaving of:angeloguvo. |
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| 04/02/10 | Deletion of:divertido. |
|
| 09/02/10 | Leaving of:Dark-Angel. |
| Deletion of:Thunderstorm. |
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| 18/02/10 | Leaving of:Joselita. |
|
| 20/02/10 | Joining of:germanox. |
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| 21/02/10 | Deletion of:joosuue__10. |
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| 24/02/10 | Joining of:nerviozzo. |
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| 27/02/10 | Joining of:mamoncillo, Gaspitas, darkhunter, JES, daniHR, kari26 and bicitrial. |
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| 28/02/10 | Joining of:stelios, antimonio, jorge5, Chispinés and elrey. |
| Deletion of:emac. |
| March 2010 |
|
| 05/03/10 | Joining of:Cristo. |
| Leaving of:JES. |
|
| 09/03/10 | Deletion of:Cristo. |
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| 10/03/10 | Joining of:Starglow. |
| Leaving of:jorge5. |
| Deletion of:stelios. |
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| 11/03/10 | Joining of:hoja oscura and Jontzu. |
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| 18/03/10 | Leaving of:Starglow. |
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| 19/03/10 | Joining of:Auron x and pelochines. |
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| 21/03/10 | Deletion of:bicitrial. |
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| 24/03/10 | Leaving of:Jontzu. |
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| 25/03/10 | Leaving of:Chispinés. |
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| 26/03/10 | Joining of:Ravadolex and Poohsason. |
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| 27/03/10 | Joining of:nacionunida and LuisMi26. |
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| 28/03/10 | Deletion of:germanox. |
| April 2010 |
|
| 01/04/10 | Joining of:dandy. |
| The alliance reaches a population more than 5,000. |
|
| 04/04/10 | Joining of:kulungele and ukelelee. |
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| 08/04/10 | Deletion of:hoja oscura. |
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| 20/04/10 | Joining of:jorge_el_capo. |
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| 22/04/10 | Deletion of:kari26. |
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| 27/04/10 | Deletion of:Poohsason and LuisMi26. |
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| 28/04/10 | The alliance is now known as LEON. |
| Joining of:antonio3. |
|
| 30/04/10 | Deletion of:Ravadolex. |
| May 2010 |
|
| 02/05/10 | Deletion of:nerviozzo darkhunter and pelochines. |