War Room X was a facility located in the Savage Land, being one of Magneto's secret bases. After detonating his former base and sinking the entire island of Genosha, Magneto and his X-Men relocated to War Room X.^[1]

The War Room X was destroyed by Magneto himself after Psylocke, who had previously defected from his X-Men, infiltrated the base with the intention to kill him.^[2]