Illusion dungeon come as a remake nightmare version of existing dungeon. Up to date, kRO already launched 6 illusion dungeons:
Moonlight (payon cave, lv 100-130 area)
Vampire (geffen dungeon dracula, lv 120-150 area)
Frozen (ice dungeon, level 130-160 area)
Abyss (turtle island, level 150-175 area)
Teddy bear (mine dungeon, level 150-175 area)
Luanda (comodo dungeon, level 150-175 area)
The feature of illusion dungeons is just a powered up version of mobs, with red bubbles. They drop new cards, similar item drops to their weaker counterpart, but those items now can be upgraded into illusion gears, which is stronger and cater specific class builds. See the gears compilation here: https://docs.google....dit?usp=sharing
And, before illusion dungeon project is in. kRO already have nightmare dungeon, on Pyramid basement, GH churchyard, and clock tower upper level. These are also powered up version, but they dont drop illusion gears. Feels like those 3 nightmare dungeons is really abandoned by kRO, as they dont want to include them on illusion dungeon projects.
Here i give proposal to upgrade gears dropped in nightmare pyramid, GH and CT to illusion counterpart. To give incentive for people to go there also.