Thats a 3D Chinese Browser Game.
Official Website : http://bd.chinesegamer.net/
Download of 2 .pak files for example : http://www.mediafire.com/?6ax54ty8i1gtlyi
Header :
Thanks.4C 48 00 00 28 04 08 20 76 66 73 31 2C 3D 2B 68 3E 78 1A 8E CE 6D 9B 20 EC 58 3A CD 3B 08 FB AA CD 1D 1A EB 95 89 40 4B EB 1A 5B 87 DF 45 D1 0F D7 1A 1F 6B FE 5C DC 19 C7 26 64 A2 F9 50 AD 3F DE 4C 60 C6 29 47 B9 42 77 32 A0 0F F9 F8 FB FA