12 Terrains:
1. Tundra: Flat and icy wasteland
2. Oasis: Flat desert area near water
3. Desert: Arid sandy ground
4. Hill: Gently rising ground
5. Mountain: Steeply rising rocky ground
6. Forest: Heavily wooded area
7. Marsh: Wet, soft ground
8. Bog: Spongy, sinking ground
9. River: Broad area of running water
10. Ocean
11. Steppe: a large area of flat unforested grassland
12. Swapm: Very wet, muddy ground