Awards organiser Hilary Halba said the play won because it was ''awesome''.
''It ticks all the boxes.''
The award ceremony at the Fortune Theatre last night was in its fifth year.
A special award to acknowledge the productions commemorating World War 1 was given to the Globe Theatre production Journey's End.
The lifetime achievement award was presented to Lisa Warrington and the outstanding contribution to Dunedin theatre award to Allen Hall Theatre, which is in its centenary year.
The male performance of the year award was earned by Jason Whyte, Ken Blackburn and Kip Chapman for their performance in The Caretaker in acknowledgement of the production's tight ensemble acting.
An initiative developed nationally, the New Zealand Theatre Service Honours recognises practitioners across all theatrical disciplines who had completed 25, 50 or 100 professional shows.
Practitioners awarded service honour medals at the ceremony last night for completing more than 100 professional shows were Shirley Kelly, Louise Petherbridge and Hilary Norris.
For more than 50 professional shows, Martyn Roberts, Lisa Warrington, Lara Macgregor, Terry MacTavish, Peter King, Julie Edwards and Simon O'Connor were honoured.
And for more than 25 professional shows, honours went to Hilary Halba, Karen Elliot, Vivien Aitken, Barry Dorking, Matthew Wilson and Patrick Davies.
Emerging theatre artist awards was given to Rosie Howells, Nell Guy and Heidi Geissler.
