Hey Mate, Glad to know you have some requirement, I gave a cost and time based on some assumption, it can vary based on your actual requirement. Basically game development is all about strategy, may I know the very basic entity of your game, cause bunch of educational gaming apps are there, so inorder to achieve a reach and revenue it should be unique and the technology should be wise also. You can build Native, Crossplatform, React Native, Unity, AR based any kind. We are excited to see what your requirement is, can you atleast brief a high level ? We would like to have a conversation, feel free to revert us back, we could contribute some from ourside also. All the best and looking forward