Earlier today I imported the original LEGO Island model into a LEGO game project of mine to test something and noticed that despite it being scaled accurately, it felt a lot smaller with a third person camera. So I imported the LI2 island model to compare, then a rip of the IXS island from Xiron, all scaled to match each other, to see just how much the island had grown between games... Images under the spoiler.
Bonus: LEGO Island(s) vs Nexus Tower in LEGO Universe. First, read this if you haven't already. Now prepare yourself:
See also: Pics of LEGO Island combined with its full racetrack:
Todo: Figure out how big these islands would be if built with real bricks...