This ROM hack from IKA and Misty modifies Rockman 2, creating a distinct version titled "Deus Ex Machina." It's a substantial alteration to the original game, possibly including adjustments to difficulty, level design, or other significant gameplay elements.  These kinds of fan-created modifications highlight the enduring appeal of classic games and the creativity of their dedicated communities.

Rockman 2 - Dr. Wily no Nazo (Japan) [Hack by IKA+Misty v1.0] (~Rockman 2 - Deus Ex Machina)

Rockman 2 - Dr. Wily no Nazo (Japan) [Hack by IKA v1.0] (~Rockman No Constancy)