Quote Originally Posted by User137 View Post
Some things can be learned from minecraft. It's not world size that makes a difference, but how much you show it at the time.
Yes Minecraft can be good exampla of how to have huge maps with low memory consumption.
But From what I understand whtemple1959 is trying to make real time strategy game similar to OpenTTD. For RTS you need to have whole map loaded at all times.

Quote Originally Posted by User137 View Post
I'm not sure if Google-maps contain height information.
Google-Maps do contain height information but it is only available through Google Earth application and not Online Maps.

Quote Originally Posted by User137 View Post
There simply isn't height data in 10 meter accuracy propably anywhere, and such database would be measured in terabytes.
I belive Google Maps do have such acuracy.

Quote Originally Posted by User137 View Post
Especially for project like this, you can expect that "player" doesn't make any changes to the terrain, so it's possible all the data can be in static sized blocks.
If he is trying to make somekinda remake of OpenTTD he will probably alow player to modify terrain as it is posible in OpenTTD.