1. Dark Viking Invasion
This map is the Dark version of Viking Invasion, in this map, we suggest players to start from both Dark Outpost I and Dark Vanguard I, by finishing both line you can meet and defeat Dark Cnut the Great Legion to get a buff (+10% attack and defense), which is very helpful for players to sweep all the other NPC, of course, if you are strong enough, you can choose to pick Dark Main Force I right after you finished the Dark Outpost line and go straight to Dark Alfred the Great Legion, which provides Glimmering Green chest (contains a Pendant of Sanity and a Crystalsong Belt) for sure. And the drop rate of White Chest in this map is much higher than Dark Sherwood Forest and Dark Holy Crusades.
2. Dark Treacherous Revenge
This map is the Dark version of Treacherous Revenge, in this map, after finishing Dark Outpost line, players can go straight to attack Dark Main Force I and move forward, which can save several banners, but it's hard to do that, so we don't suggest you choosing this way if you are not strong enough. You can choose to finish Dark Vanguard at the same time so you can get a buff by defeating Dark Spartacus Legion. At the end, if you defeat Dark Morgan le Fay Legion, you can get Flashing Green chest (contains a Clasp of Discipline, a Ring of Calm and a Crystalsong Belt) for sure. And the drop rate of White Chest in this map is also much higher than Dark Sherwood Forest and Dark Holy Crusades.