"XDoom is a source port for UNIX and UNIX-like systems written by Udo Munk. It can play levels created for Boom and includes several new features, some of which are not seen in other ports."@en . "XDoom is a source port for UNIX and UNIX-like systems written by Udo Munk. It can play levels created for Boom and includes several new features, some of which are not seen in other ports."@en . "XDoom"@en . . . . .