| Year | Series/airing/promo | Special events | Related products | CodeLyoko.fr & Community | 
| Before 2003 | June 2000: Presentation of "Enfants font leur cinéma" ("Children make their films") at the Annecy Animation Film Festival 2000 2001: Elaboration of Garage Kids, the pilot of Code Lyoko.
 16 January 2002: Scripting for season 1 commenced
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| 2003 | 8 July: Scripting for season 1 ended 3 September: Début of the series on France 3
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| 2004 | |  |  |  |  |  |  | 19 April: Début of season 1 in the United States of America on Cartoon Network USA |  |  |  |  |  |  |  |  |  | September: Début of the airing on Canal J. |  | 7 October: Scripting for season 2 commenced |  |  |  |  | 
 |  | |  |  | 14 February: Release of the first DVD and VHS volume of the Code Lyoko series (FR) February: Release of the Code Lyoko single 2004 (season 1 clip)
 |  |  |  |  |  |  |  |  |  |  |  | 25 August: Release of the second DVD and VHS volume of the Code Lyoko series (FR) |  | 15 September: Release of the first Code Lyoko book (cine-manga collection) |  | 21 October: Release of the DVD volumes 1 and 2 box set (FR) |  |  |  |  | 
 | 27 July: Birth of CodeLyoko.fr, under another domain name. | 
| 2005 | |  |  |  |  |  |  | 18 April: Scripting for season 2 ended |  |  |  |  |  |  |  | 31 August: Début of season 2 on France Truc (France 3) |  | 19 September:  Début of season 2 in the United States of America on Cartoon Network USA |  |  |  |  |  | 28 December: Scripting for season 3 commenced | 
 |  | |  |  |  |  |  |  |  |  |  |  | 8 June: Release of the second Code Lyoko book (cine-manga collection) |  |  |  |  |  |  |  | 20 September: Release of X.A.N.A. Unleashed DVD (region 1) |  | 5 October: Release of the 1st Bibliothéque Verte book October: Release of the Panini album
 |  |  |  | 7 December: Release of the 2nd Bibliothéque Verte book |  | 20 December: Release of Moves, Music and Mayhem DVD (region 1) | 
 | |  |  |  |  |  |  |  |  | 2 May: Purchase of the CodeLyoko.Fr domain name. |  |  |  |  |  |  |  | 1 September: Opening of V4 - CodeLyoko.fr becomes a quality site on the series with a proper design. |  |  |  |  |  |  | 
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| 2006 | |  |  |  |  |  |  | 15 April: Début of season 2 on Canal J 18 April: Scripting for season 3 ended
 |  |  |  |  |  |  |  |  |  | 9 September: Début of season 3 on Toowam (France 3) |  | 2 October: Début of season 3 in the USA on Cartoon Network, first time in the world the prequel was aired (in English) on Cartoon Network 21 October: Début of season 3 on Canal J, first French airing of the prequel on Canal J
 |  | 8 November: End of season 3 |  |  | 
 | |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 October to 30 November: Code Lyoko exhibition at the Gobalins school (Paris) |  |  |  | 16 December: Code Lyoko receives the export prize of 2006 in the animation category | 
 | |  |  |  |  |  |  |  |  | 14 March: Release of X.A.N.A. Possessed DVD (region 1) |  | 14 March: Release of complete season 1 DVD disc set |  | 24 May: Release of the 3rd Bibliothéque Verte book May: Release of the Code Lyoko single CD 2006 (season 2 clip)
 |  |  |  |  |  | August: Release of two Code Lyoko games via mobile phone subscription |  | 6 September: Release of the 4th Bibliothéque Verte book 20 September: Release of the figurines in stores
 20/23 September: Code Lyoko event in Toys 'R' Us in Paris, La Défense: world launch of the figurines and photo opportunity with backgrounds from the series
 26 September: Release of the 3-disc DVD box set of the first part of season 2 (13 episodes, FR)
 |  |  |  | November: Release of the first Code Lyoko cards in stores 20 November: Release of the single CD and Subdigitals album
 |  | 28 November: Release of Sector 5 Mystery DVD |  |  | 
 | |  |  | 21 February: Creation of the Files and Press Review sections. |  |  |  | 26 April: The 500 000 visitor cap is crossed. |  |  |  |  |  |  |  |  |  | 10 September: Opening of the Episode Guide. |  |  |  | 8 November: Record of visitors reached with 105 people connected at once. |  | Christmas: Interview with Sophie Decroisette. Christmas: Appearance of the Carthage Community.
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| 2007 | |  |  |  |  |  |  |  |  | 18 May: Début of season 4 in the USA |  |  |  |  |  | 13 August: Début of season 4 on France 3 |  |  |  | October: Début of season 4 on Canal J |  | 10 November: End of season 4 on France 3 |  |  | 
 | |  |  |  |  |  |  |  |  |  |  |  |  | 5 July: Advance screening of season 4 + Wii game demo |  |  |  |  |  |  |  |  |  |  | 
 | | 17 January: Release of the 5th Bibliothéque Verte book |  |  |  |  |  | 7 March: Release of X.A.N.A. Unleashed DVD (region 4) 7 March: Release of Movies, Music + Mayhem DVD (region 4)
 |  | 3 April: Season 2 part 2 DVD (FR) |  | 23 May: Release of the 6th Bibliothéque Verte book |  | 6 June: Release of X.A.N.A. Possessed DVD (region 4) |  | 22 June: Code Lyoko DS in France |  | 4 July: Code Lyoko 2.0 issue 1 |  | 1 August: Season 3 DVD (FR) 22 August: Release of the 7th Bibliothéque Verte book
 |  |  |  | October: Début of Code Lyoko press releases |  | 23 November: Code Lyoko Wii: Quest for Infinity |  |  | 
 | | End of January: 1 000 000 visitors. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
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| 2008 |  | |  |  |  |  | Spring: Lunch of "Objectif Lyoko": the colourful attraction of the series at Futuroscope |  |  |  | 23 May to 29 June: Expo on the Ile Seguin |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
 | | 9 January: Release of the 8th Bibliothéque Verte book |  | 5 February: Release of the season 4 DVDs (part 1, FR) |  | 14 March: Release of the 9th Bibliothéque Verte book |  | 2 April: Release of the season 4 DVDs (part 2, FR) |  |  |  |  |  |  |  |  |  | 14 September: Release of the second DS game: Fall of X.A.N.A. 23 September: Release of the season 1 DVDs (parts 1 and 2, FR)
 26 September: Release of the PSP and PS2 game Code Lyoko: Quest for Infinity
 |  | 8 October: Release of the 10th Bibliothéque Verte book |  |  |  |  | 
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| 2009 |  |  | | 14 January: Release of the 11th Bibliothéque Verte book |  |  |  |  |  |  |  | 11 May: Release of Code Lyoko Chronicles book 1 (in Italy) |  |  |  |  |  |  |  |  |  |  |  | 27 November: Release of Code Lyoko Chronicles book 2 (in Italy) |  | 2 December: Release of the 12th (and last) Bibliothéque Verte book | 
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| 2010 | |  |  |  |  |  |  |  |  |  |  |  |  | July: The discussion about season 5 is begun. |  |  |  |  |  |  |  |  |  |  | 
 |  | |  |  |  |  |  |  | 30 April: Release of Code Lyoko Chronicles book 3 (in Italy) |  |  |  |  |  |  |  |  |  | 1 September: Release of Code Lyoko Chronicles book 1 (in France) |  | October: Release of Code Lyoko Chronicles book 4 (in Italy) |  |  |  |  | 
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| 2011 | |  |  |  |  |  |  |  |  | 31 May: Code Lyoko Evolution is announced with 26 episodes and the replacement of the 2D animation with live action |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
 | |  |  |  |  |  |  | 2 April: Fan event in Spain. Large gathering of fans with appearance by Tania Palumbo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
 | | 19 January: Release of Code Lyoko Chronicles book 2 (in France) |  | 30 November to 19 December: Release of complete seasons 1-4 disc sets and box set |  |  |  |  |  |  |  |  |  |  | 
 | |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | November: First regular contacts between CodeLyoko.fr and Moonscoop. |  |  | 
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