Supply Drops return in Call of Duty: Blacks Op 3 but in a completely new way.
Supply Drops in Black Ops 3 are very different from the ones in Advanced Warfare since they will not be rewarded after certain amount of games.
You will now have to exchange Cryptokeys which are Keys that you earn depending on your in-game time; winning games will boost your Cryptokey progression by 20% of the bar.
This means that the fastest way of obtaining Cryptokeys would be picking the fastest gamemode along with the most point obtaining ones. You would like to have a happy medium between these two which would be playing Kill Confirmed, collecting Dog Tags and using UAV & Counter-UAV scorestreaks.
You can trade in your Cryptokeys or check your progression in getting the next Key in the Black Market.
The Supply Drop Item Rarity is Common, Rare, Epic, and Legendary. You will still be able to receive Weapon Camos, Specialists Outfits, Decals and Calling Cards from Supply Drops.
There are 2 category of Supply Drops in Call of Duty: Black Ops 3, the Common Supply Drop & the Rare Supply Drop. The Common costs 10 Keys & the Rare costs 30 Keys. Each Supply Drop still gives 3 randomized items.
The Common Supply Drop will have a randomized chance of getting any ranked items from Common all the way up to Legendary.
The Rare Supply Drop will have a guaranteed Rare or above Drop.