Most of Game of Thrones' main characters are more morally grey than the protagonists of Lord of the Rings. Both deal with issues of good and evil, though Lord of the Rings takes more of a traditional fantasy position of good conquering evil while Game of Thrones deals with a lot more gray areas. Both feature characters dealing with difficult situations and using their wits and occasionally help from others to get out of them.
Lord of the Rings and Game of Thronesare both fantasy stories of epic proportions.