Npcs goes sleep at 10PM, and wake up at 7AM (to see the time, just check the sun-clock)
Lights goes off/on and windows open/closed at day/night
Monster's spawn are by movements, giving some animation to an hunt.
Spawns are by level (+LEVEL = -SPAWNTIME)
There is a chance of raining.
Using trees, plants and other things that are in the map, might give you something... even if it is a battle.
Fishing dont need worms, unless you want some big fishes.
Accidently threw an item in the water? No problem, just fish it back.
You can make potions by picking herbs from grass or picking gems from stones. (For getting sulphurs you need to use an herb or use a staff in a gem)
The NPC Malesia now sells boost runes, using a boost rune in a backpack gives you 20 runes of its type.