For Satta Matka app development I suggest you Artistixe IT Solutions LLP.  I am working in Artistixe IT Solutions LLP and I have personal experience with Artistixe. It has very talented employees in developing, designing, and marketing. It also has experience in game development. Artistixe IT Solutions LLP has done 1350 projects as a freelancer. It has a good rating on the google website and freelancer account.