I would have thought for a flash card style game ui would be easier than Scene. As pointed out, more code, but simple positioning code. But to make a grid/content class , a Results bar class , maybe a status bar class and then a container class to bring it all together, many games could be derived, ultimately ending up in a lot less code. Example alphabet game, word game, simple puzzle game etc...
But we know what we know. I don't know that much.