Memory Jars are glass jars that are regularly empty. This is their deactivated state.

Starting off your work like this is pretty bad to do. That's a stub sentence which also doesn't help to begin the article.

If a wanderer dies possessing a Memory Jar, their memories will appear as small spheres inside the jar, and the Memory Jar enters their activated state.

phrased wrong, also comes in like a train.

The colour of these spheres vary depending on the ex-holder's personality.

Phrased shortly, stands out.

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Your description needs work. It is only three sentences, and doesn't clinically tell me what to look out for. It doesn't help me identify it from other liquids before hand, doesn't tell me what happens should you open them, doesn't tell me much at all. Needs work.

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Not gonna go line by line for each jar, as they all are written SPaG wise correctly, however, I will note that having a different section for every color is unnecessary should you wish to keep these as short as you do. Define the differences between these jars, as some blur within each other.

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The M.E.G speculates there are other colours of Memory Jar, but are undocumented.

Why? This part can ultimately be omitted, it clinically is incorrect, and promoted hesitance.

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If memories were inserted into a computer system, the memories would be saved as videos in a new folder labelled "Memories of the late

[name of ex-holder]".

Really explain how this works. This is a liquid, how in the hell would it be plugged into a computer.

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Deactivated Memory Jars are sold as mementos. They can also be found randomly inside The Memory. The B.N.T.G sell and trade Memory Jars to wanderers.

incorrect "to", very short for a whole header.

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General Thoughts: This article is quite short, which is fine, but the way you format it isn't very good at all, and promotes giant documentation, which doesn't fit what you are doing. The concept is fairly decent, so don't change much of that. However, make this have more depth, add more detail, and make it formatted so it looks how it is: a short article for a simple, yet interesting, concept.