Talk:BLACK Version/@comment-34255055-20180107192606/@comment-27141730-20180107205702

The chance of getting keys from nightmare is very low, don't whine, cause you're likely just going to keep not getting any for a while. Keep playing that's all you can really do.

Cores will only drop from elite nantonium boxes, which means the box MUST pop from an 'ELITE' savage dev or necro, and even then one will only drop once on average every 200 elite nanos that you get from these bosses. Elite sav necros only spawn in nm396+ games and elite sav devs in like 350+ (number uncomfirmed as there's no where on this wiki that actually states what level they actually spawn - so helpful...).

The best you can do for getting cores is to level up and then hope, play onslaught (cause of the fixed boss) and powerout cause sometimes the first boss bugs out and gives you what you're not soppose to get. For keys, just keep playing, they drop more often and the nanos don't have to be elite. Also if you're buying HR all the time to think it's helping consider not purchasing it every game, cause it doesn't make a difference to the drops within the boxes.

An alternative to these methods is either buying them or crafting the cores. (300k alloy + $80mil).