Exhibit 8.1

List of Subsidiaries of Perfect World Co., Ltd. (the “Registrant”)

Wholly-Owned Subsidiaries

1.Perfect Online Holding Limited, a Hong Kong company

2.Beijing Perfect World Software Co., Ltd., a PRC company

3.Beijing Perfect World Digital Entertainment Software Co., Ltd., a PRC company

4.Chengdu Perfect World Software Co., Ltd., a PRC company

5.Shanghai Perfect World Software Co., Ltd., a PRC company

6.Beijing Perfect World Game Software Co., Ltd., a PRC company

7.Perfect Sky Online Co., Limited, a Hong Kong company

8.Global Interserv (Caymans) Inc., a Cayman Islands company

9.Interserv Information and Technology (Shanghai) Co., Ltd., a PRC company

10.Perfect World Interactive Entertainment Co., Ltd., a Cayman Islands company

11.Perfect Entertainment Zone N.V., a Netherlands Antilles company

12.Perfect World Universal Coöperatieve U.A., a Netherlands company

13.Perfect World Europe B.V., a Netherlands company

14.Perfect World Entertainment Inc., a Delaware, United States Corporation

15.Cryptic Studios, Inc. a California, United States Corporation

16.C&C Media Co., Ltd., a Japanese company

17.CCO Co., Ltd., a Japanese company

18.Perfect Game Holding Limited, a British Virgin Islands company

19.Perfect Management Holding Limited, a British Virgin Islands company

20.Happy Moment Holding Limited, a British Virgin Islands company

21.Perfect Star Co., Ltd., a Malaysia company

22.Perfect World Interactive Technology Co., Ltd., a Taiwan company

23.Happy Fantasy Limited, a British Virgin Islands company

24.NGL Co., Ltd., a Korea company

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25.Perfect Play SDN. BHD., a Malaysia company

Majority-Owned Subsidiaries

26.Runic Games, Inc., a Delaware, United States Corporation

27.Zongheng Limited, a Cayman Islands company

28.Zongheng Online LIMITED, a Hong Kong company

29.Huanxiang Zongheng Software Technology Co., Ltd., a PRC company

30.Unknown Worlds, Co., Ltd., a California, United States Corporation

Affiliated Entities Consolidated in the Registrant’s Financial Statement

31.Beijing Perfect World Network Technology Co., Ltd., a PRC company

32.Beijing Huanxiang Zongheng Chinese Literature Website Co., Ltd., a PRC company

33.Shanghai Perfect World Network Technology Co., Ltd., a PRC company

34.Chengdu Perfect World Network Technology Co., Ltd., a PRC company

35.Beijing Perfect World Digital Entertainment Co., Ltd., a PRC company

36.Chengdu Ye Net Science and Technology Development Co., Ltd., a PRC company

37.Hefei Perfect World Network Technology Co., Ltd., a PRC company

38.Beijing Perfect Moment Network Technology Co., Ltd., a PRC company

39.Tianjin Trendsters Investment Co., Ltd., a PRC company

40.Beijing Neon Culture Communication Co., Ltd., a PRC company

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