Android Beautiful Multiplayer Game

I want to Develope an Online Multiplayer Game That could be played Offline Too vs Computer in Unity 3D or Android Studio with Java ,, with Eye Pleasing user Interface with User Chat and Video Chat Facility and Message Inbox with Freind Requests Facility and Notifications and Payment and User Wallet Facility in which Amount will be shown to be used to play Game or Purchase Coins or Other Stuffs ,, Serious People Who Have Experience or Fresher with Knowledge Real Skill of Such Project Can Bid ,, User Interface and Design matters a lot and App must run without any Glitch even in Slow Internet Connectivity as 15-20 Kbps ,, Developer should give me Support After handing Over App ,, I need a smooth seemless fast Backend with MySQL or PHP JSON and Firebase or Parse my own Admin Panel Source Code to take care Serious Bid Amount in which You Can Develope This App without any Compromise ,, in 15 - 20 days.