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The codes are system commands that are directly entered into Tower interfaces in order to interact with the Supercomputer's internal systems. Regularly-occurring codes are:

• Code: LYOKO: Deactivates a Tower that has been activated.
• Code: EARTH: Materialized Aelita when she didn't possess all of her memories. With some adjusting, it could materialize all of the Lyoko Warriors should something wrong happen to the regular materialization program.
• Code: XANA: Gives X.A.N.A. control over all of the Tower's functions. With Way Towers, it can use them to destroy their corresponding sectors. If they are normal Towers, it could access their data and take control of any programs they currently use.

There is one other code that is exclusively used by Jeremie.

• Scipio: Is used to transport the Lyoko Warriors into the Carthage. Jeremie types the code in the Supercomputer for it to activate.

Game Exclusive Codes

• Code: Chimera: Destroys the replika that specific tower is in. It's only used in Code Lyoko: Quest for Infinity.

Social Game Exclusive Codes

All of these codes deactivate specific towers in the social game.

• Mirror
• Rorrim
• Lyoko
• Training
• Desert
• Sand
• Heat
• Carthage
• Sun
• Echo
• Sissi

Be advised that this isn't a complete list, there are dozens others. The game is still being patched, so various minor codes are constantly being removed, added, modified, etc. As a result, the data is dynamic.

v · d · e Lyoko
Characters	Franz Hopper X.A.N.A. Lyoko Warriors Jeremie Belpois Aelita Schaeffer Odd Della Robbia Ulrich Stern Yumi Ishiyama William Dunbar
Locations	Sectors Ice Sector Desert Sector Forest Sector Mountain Sector Sector Five Arena Celestial Dome Core Zone Data Tunnels Skidbladnir Hangar Heart of Lyoko Other Digital Sea Virtual Limbo
Hardware	Factory Interface Holomap Scanner Supercomputer
Virtual Objects	Eye Scanner Lyoko Wires MegaPod Overboard Overbike Overwing Skidbladnir Nav Skid Tower Way Towers Transport Orb Virtual World Shell
Programs	Annex Program Anti-X.A.N.A. Program Avatar Codes Lyoko Earth X.A.N.A. Scipio Deletion Devirtualization Digital Genetic Code Energize ID Card Keys to Lyoko Life Point Memory fragment Pulsations Sector Alteration Program Simulation Bubble Superscan Telephone Vehicle Virtualization Program
Weapons	Lyoko Warriors Katana Laser Arrow Tessen Fans Zweihänder Monsters Circular Laser Flying Mine Hallucinogenic Beam Laser Pulse Beam
Powers	Catclimb Energy Beam Energy Fields Enhanced Marksmanship Feline Execution Monster Riding Second Sight Second View Shield Super Smoke Super Sprint Telekinesis Teleportation
Other	Eye of X.A.N.A. Gunship Virtual Weather