Cygnus IV

Cygnus IV is a Doom II episode replacement containing fourteen levels and new MIDI music created by John Bye. Released in September 1996, it was followed by a v2.0 update in April 1997 that fixed bugs and added new demo lumps showcasing the levels.

The WAD comes with DeHacked file to update the text screen story.

Levels

 * MAP01: The Park
 * MAP02: The Sewers
 * MAP03: The Treatment Plant
 * MAP04: The Settling Tanks
 * MAP05: The Pipes
 * MAP06: The Factory
 * MAP07: The Warehouse
 * MAP08: The Railhead
 * MAP09: The Subway
 * MAP10: The City
 * MAP11: The Cathedral
 * MAP12: The Tunnels
 * MAP13: The Living Maze
 * MAP14: Gateway - The Finale

Built-in demos
This WAD features three built-in demos. All require Doom II v1.9 to view them. The demo levels are: