[Japo]

Camels are more resistant to (less likely to get killed by) sandstorms which occur in deserts, while donkeys are more resistant to landslides which occur in mountains. The green/yellow/red movement toggle lets you choose whether you want your units to move through the safest route, a middle case, or the fastest one. If you set a far away destination point for example at sea you'll see that if you select the green option the ship will try to follow the coastline as there are fewer pirates near it, and if you select the red one the ship will follow a straight line even though it means traversing deep sea.