In terms of the size of the game world, and the time it would take to travel to all its points, Elite Dangerous would have to take the crown.
As an example, the size of Eve is estimated at about 3x10^14 cubic meters. If we are to believe that the accessible game world of ED is the galaxy, that would make the size of ED about 3x10^61 cubic meters.
Yes, I know 99.9999x% of that size is just empty space, devoid of any content, but I can still fly my ship to most parts of that void - fuel/repairs/lifespan permitted.
As an example, the size of Eve is estimated at about 3x10^14 cubic meters. If we are to believe that the accessible game world of ED is the galaxy, that would make the size of ED about 3x10^61 cubic meters.
Yes, I know 99.9999x% of that size is just empty space, devoid of any content, but I can still fly my ship to most parts of that void - fuel/repairs/lifespan permitted.