Sexy 3D avatar chat game needed (18+)

We want to create an online community and 3D sex game (18+) that can be accessed from both PCs and Mobile devices (windows and android being our primary targets) so we need it to be built in an engine that is lightweight and flexible and also supports 3D. The game needs to contain the following: - free and premium currency system - 3D user avatar for each user (male or female) - lots of interactive 3D poses,idle movements and sexual poses for 2,3,4... persons - detailed ability to customize avatar body shape and sizes - detailed ability to clothe avatars, virtual item shops and user inventory - common social networking features such as profile information, messaging,friends,groups,block etc. - ability to create private 3D chat rooms as well as have larger public rooms where people can hang out and meet. - ability to make rooms with multiple users (no more than 10). - other mini games and activities to socialize and earn in game currency - events We want to make a game similar to an existing game which you can check out here: [login to view URL] We would like our game to be better than this game in terms of graphics, user friendliness,avatar customization and generally we want both free and premium users to have fun.