Love Final Fantasy XV, hate it, or whether you're indifferent, there is something I think we can all agree on.

[Wyrdness]

The Fury said:

I always wondered about something in many of these open world games is the idea is how long would it take to 'walk' across these massive open world maps. Straight line from either a corner to corner or east to west or something.

While walking speed might be different in games, it would give a true scale of the distance in the game if you consider humans walk on average 5 km/h (3-4mph).

Of course doing said thing would be a big waste or time/boring.

Someone did that when comparing XCX and Skyrim, he recorded it and had the videos playing side by side, he got to the end of Skyrim before he was even half way through XCX despite the fact that in the latter he was in a vehicle that moved way faster than the MC in Skyrim.