Choose map generation algorithm

http://stackoverflow.com/questions/1449205/realistic-2d-terrain-map...

• Generate a heightmap with perlin noise
• Find an n x b sized block with the highest average elevation of the map
  • Increase the height of all blocks in that block by @x@%, and consider it a mountain range
• Find another n x b sized block with an average elevation > the 70th percentile of the entire map
  • Turn it into water blocks and average out the elevation so it is flat - this is a high lake
• Do the same again, but for a < 30th percentile elevation block - consider this a drainage lake
• Step down in elevation block by block, turning them into river blocks, taking the straighter path if it is only a little less downhill than the steepest option
  • Continue until you hit the edge of the map or the drainage lake
• Generate a perlin noise map for each of the natural resources and apply values to all of the blocks