mobile app integration with unity framework

I need your support to develop a Flutter prototype with few unity games. Flutter mobile app will have a screen with three buttons. I will give you three Unity game samples. Each button will be mapped to one unity game. When user clicks on the button, then the respective unity game has to get launched and game must be able to be played on flutter app. You need to work closely with my unity developer for this prototype. Please let me know if you can work on this. When we click on that buttons respective Unity libraries or android unity libraries need to be downloaded and integrate into the application and open the unity view.