62,000 blocks may not sound like a lot, but that would be 11.5 hours of walking continuously without any obstructions or stopping. I'm pretty sure not many people are going to run out of space.

> Homepage says supports up to 62000blocks per dimension, which, conrary to their claim, is quite small.

Indeed. Minecraft only gets ~256 in the Y-direction, but allows you to go ~30,000,000 in the X/Z-directions.