Nintendo World Report has put together a video clip demonstrating how the Xenoblade Chronicles X open world is bigger than those in Skyrim, Fallout 4, and Witcher 3 combined.
Infact, the reporter calculated that you could fit Fallout 4’s open world inside Xenoblade Chronicles X five times, the same comparison with Witcher 3 was that it could fit inside the title three times.
In the video, the reporter compares the open world of Xenoblade Chronicles X against Skyrim. The Skyrim map was crossed by his character in 20-25 minutes, with a much slower moving character than the reporters Xenoblade comparison. In the same time in Xenoblade Chronicles X, with a faster moving character, there was still plenty of world to explore.
The video quotes that the Skyrim map is roughly 37 km2 whereas Xenoblade Chronicles X map is around 400 km2. So in short, the Xenoblade Chronicles X map is huge, check it out for yourself below: