Exhibit 8.1

List of Subsidiaries of the Registrant

• Changyou.com (HK) Limited, incorporated in Hong Kong.

• Beijing AmazGame Age Internet Technology Co., Ltd., incorporated in the PRC.

• Beijing Changyou Gamespace Software Technology Co., Ltd., incorporated in the PRC.

• ICE Entertainment (HK) Limited, incorporated in Hong Kong.

• ICE Information Technology (Shanghai) Co., Ltd, incorporated in the PRC.

• Beijing Yang Fan Jing He Information Consulting Co., Ltd, incorporated in the PRC.

• Changyou.com (US), Inc., incorporated in the United States.

• Changyou.com (UK) Co., Ltd., incorporated in the United Kingdom.

• Changyou My Sdn. Bhd, incorporated in Malaysia.

• Changyou.com Korea Limited, incorporated in South Korea.