X-Men Origins Magneto

X-Men Origins Magneto is a cancelled X-Men sequel that was supposed to come out after X-Men Origins Wolverine.

Plot
Unknown

Why It Was Cancelled

 * 1) X-Men Origins Wolverine got negative reviews from critics.
 * 2) Wolverine also performed poorly at the box office.

Result

 * The film was cancelled.
 * Elements of Magneto's storyline was used for the 2011 prequel film, X-Men: First Class.