How to use and claim Emperor's Key in Attack on Titan Revolution

If you're trying to slice your way through titans and farm some better items in Attack on Titan: Revolution, your goal should always be to get some high-tier gear. Well, today you're in luck, because in this article you will learn everything you need to know about how to claim and use Emperor's Keys in AOTR.
Starting off with at beginning, let's talk a little bit about what Keys are, and then we'll get to how you can use them and how I recommend using them!
What is the Emperor's Key in AOTR?
The Emperor's Key is an item in Attack on Titan Revolution that you can use to unlock exclusive Emperor Crates. This is the crate you get access to after defeating the boss. In a way, you can think of it as your ticket to gear that can dramatically enhance your character.
How to get Emperor’s Keys in Attack on Titan: Revolution
Farming these keys can be a mission in and of itself. I've listed all the ways you can gather them right now, including the premium options:- Do your daily missions
- You can buy it from the Market for 2,999 Gems (price may vary), located under the Progression tab.
- It can drop from the Raider's Chest
- Keep an eye out for events that give you exclusive Emperor's Keys
I would also like to add that in Raids, the chance of getting an Emperor's Key is higher if you challenge a higher-difficulty boss.
How to use the Emperor’s Key in AOTR
Once you’ve managed to get your hands on one (or more) keys, here is how you can use them:Use it on specific Emperor Crates
These crates contain some of the best loot in AOTR. I recommend you save your keys for these crates rather than spending them on something else. The best thing to do is check the current Raids and decide which loot you want in particular.Once you have your eyes set on a particular Emperor's Crate, then you should go ahead and farm that boss and spend all of your Keys there.

If you are new to Attack on Titan: Revolution, make sure you also read our AOTR tier list and redeem the latest AOTR codes!