I design Game Concepts/Ideas with complete Game Design Document. I will help you in making Complete Game Balancing.
Game Concept Designs (Story & Idea)
- Game Mechanics (Rules)
 - Game Economics (Value & Limits)
 - Game Balancing (Strong Analytics)
 - Game Levels (Missions)
 - Monetizing Strategy  
 - Game Visuals (Selecting / Choices)
 
These all were necessary to make game growth & earn.