X-TINCTION AGENDA is a 9-part Marvel crossover story event from 1990 among UNCANNY X-MEN, X-FACTOR and NEW MUTANTS. The crossover is notable for creative contributions from artists Jim Lee and Rob Liefeld during the 1990s speculator boom, for reuniting the X-Men and for featuring the combined might of 3 mutant teams fighting the oppressive Genoshan government. The storyline would have a few lasting effects on the X-titles going forward.