Metas may participate in special castling variants if they copy a Rook or King that has not yet moved β€” even if the Meta itself has already moved.

Whether it is the King or a Meta copying a King, both of the pieces can move 2 squares and the rook il like in a normal casling jumping over the moved piece.

It is possible to perform both a kingside and queenside castle during the same game.

Kingside castling Queenside castling
Meta copies Rook Meta copies King Meta copies Rook Meta copies King
G/H/F E/G/H C/A/D E/C/B
G/H/F E/G/H C/A/D E/C/B
G/H/F E/G/H C/A/D E/C/B
G/H/F E/G/H C/A/D E/C/B