Detection is a perception based skill the improves your chances of finding hidden passages and traps when earching. In a dungeon level that has narrow corridors connecting rooms, most dead ends are secret passages.
A character without the Detection skill may still search, but it will take a lot longer to get a result.
Detection in Elona+
Detection is actually a good skill, because of changes made to how you collect items, every type of gathering spot has an associated skill that increases the chance of successfully gathering there, so if you don't have the necessary skill, you'll notice that you won't be able to gather things when you start doing higher level dungeons. That's why you should take detection so that you can always gather ingredients.
In version 1.37, pets who have the detection skill and an impression > 100 can help collect materials after defeating enemies. You cannteract with them and choose Talk->Receive Materials to get the materials they have collected.
Detection in Omake Overhaul
In Omake overhaul, Detection can detect objects and enemies.
Detect Objects: Upon entering a new Nefia or floor for the first time they will sometimes spot objects in the current area.
Chance of occurring and its efficacy increases with higher levels of detection and perception.
Detect enemies: Byearching, players can detect the direction and distance of nearby NPCs using their senses.
Distance they can perceive up to increases with higher detection skill.
#detecwill increase Detection by 1 level and train its potential.
In mobile, the Detection skill is a Perception based skill.
Detection can be trained by serching Junk Piles, found in Cave and Tower type randon dungeons.
It is believed that Detection effects your ability to gather materials in dungeons. Some players have reported that you can only gather at dungeons x2 your skill level, but this theory is unconfirmed. Other factors may effect the material gathering equation.
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