X Program

The X-Program (Xプログラム X-Puroguramu) is a termination program initiated by Yggdrasill to eliminate 99% of Digimon as a result of the exponential growth of Digimon causing the Digital World to reach maximum capacity. When the X-Program was executed by Yggdrasill, 98% of the total Digimon population was eliminated. The remaining 2% were transferred to the New Digital World where the X-Program could not reach them. However, 1% of the original number of Digimon (1/2 of those surviving in the NEW Digital World), were strong enough to resist the effects of the X-Program and were able to survive by changing their Digicores. These Digimon were reborn in a form that could take in the X-Program and eventually it came to a point where a program that opposed the X-Program was installed into the Digicore - the X-Antibody.