Talk:Raid Battle/@comment-36.79.102.73-20150802052938/@comment-110.159.20.230-20150802105405

Either join a full room or make a room yourself and let others to join. Even allow people to join midway. There is no issue with that. It took sometime (18 runs) for it to drop for me once it does I got the other 3 void chunks in 6 runs. My first Void Chunk was on 4 star the other 3 drops were on 3 star.

There is no guarantee Void Chunk will drop on 1-3 stars but 4-5 stars it does seem to drop.