Make the world map that is available in game less specific
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In order to make it even more risky, add additional dangers to OSRS gold these forests. Most of the map reflects an environment that is suitable for a mid to lower level player to whom dragon would be an unusual material to see and Barrows armor is very rare. The most hazardous locations aren't necessarily the most hazardous. Literally, adding boss creatures to these forests could greatly increase their risk. But, this is only possible when these forests are accessible from any location.
Make the world map that is available in game less specific. It could be made so that each area was explored before it was properly recorded in the map. This would greatly improve the adventure experience. New lands would be truly completely alien.
Have fewer artificial barriers. This can be an obstacle to immersion. It would be amazing that cliffs could be climbed but required time and buy RuneScape Mobile gold equipment. If rivers weren't walls you could leap over. If rivers were obstacles that could be swam through with the proper equipment, it would be incredible.