Wild is a little different than the other categories of boards in that the starting positions are non-standard. Because wild games are fundamentally different than regular chess, they are rated separately from blitz and standard chess games. The wild ratings, however, do not tale into account the time controls; all wild games are rated on the same basis.
For a description of the different kinds of Wild Chess see the corresponding help pages for wild1-wild10, atomic and suicide.
See also: atomic, boards, match, suicide, wild 1, wild 2, wild 3, wild 4, wild 5, wild 6, wild 7, wild 8, wild 9, wild 10, wild 11, wild 12, wild 17