I got a question for you: HBO ordered the seventh season on April 21, 2016, three days before the premiere of the show's sixth season, and began filming on August 31, 2016. The season was filmed primarily in Northern Ireland, Spain, Croatia and Iceland.

Based on this passage, where is the current game of thrones filmed?
Let's think first:
The relevant information to answer the above question is: The season was filmed primarily in Northern Ireland, Spain, Croatia and Iceland.
Therefore, the answer is Northern Ireland , Spain , Croatia and Iceland.