Global map of the planet

[Jetronium]

On the map of the planet Player create sectors (in mountainous areas more iron or copper, but there are no other resources, coal in the forest, desert: oil or uranium)
Using trains to transport resources between sectors

[Tekky]

Yes, limiting certain resources to certain biomes could make the game more interesting. However, that would also mean that the starting area would have to consist of several different biomes, otherwise there wouldn't be all resources in the starting area.

[theorderofthings]

The starting area could just have a very low richness and ore patch size. Biomes wouldn't need to have specifically only one ore type - it could just be a strong bonus to certain ore types.

[Jetronium]

Developed a system of sectors,
Allows you to develop the game further: add orbit for example
Each sector will be unique:
Military - will attack the advancing hordes of enemies with the help of artillery and draw their attention
Miner's - extraction of a huge amount of ore from underground sources with the help of mining drones, which will need many logical centers to coordinate their work
.....

This game needs something to change, for example trains they are simply useless
Why build them if you have conveyor belt