I assume lot of developers are getting IP related issues. From other stores, we understand that
1. Game Concepts can't be copyrighted - So you can copy a game concept
2. Game Name : We search of trademarks for the game name, and try not to copy exact name but can contain generic word e.g. Glory , Fish , Neighbor etc
3. Art Work : Art work has to be created from scratch or purchased.
4. Keywords : Apple usually validates this before approving the application, Whats Amazon recommendation here ?
Can someone from Amazon help developers with these issues before throwing us out of stores?