MCO-647

**Item #:** MCO-647

**Object Class:** Hazardous Keter

**Containment Solution:** All eighteen (18) known infected locations are to be quarantined, with research outposts constructed outside each area. In order to minimize the spread of airborne MCO-647 code, a 40 block “hazard-zone” is to be established around each of these locations.

No personnel are to enter this zone from the outside, and entities exiting the containment sites are to be detained and quarantined. From here, MCS teams will test for traces of MCO-647 programming. Any confirmed MCO-647-1 instances should immediately be destroyed via incineration in lava.

Any active MCO-647-1 instances spotted should be terminated immediately.

**Description:** MCO-647 was originally discovered in a village near [DATA REDACTED] in late 2022. A group of users discovered the phenomenon and contacted Mojang who, after a brief investigation, contacted MCS. As of [DATA EXPUNGED], eighteen (18) locations have been quarantined due to MCO-647 infection, spanning four (4) servers. These locations include 10 villages, 4 player bases, 3 natural structures, and the now abandoned MCS In-Game Research Facility 87 (see incident report 647-A)

MCO-647 is an anomalous piece of code existing in the game’s programming as a series of random characters. The programming of MCO-647 consists of 10-136 characters depending on the particular infected entity. Each character is a seemingly random character on a keyboard, with letters, numbers, and symbols being observed.

MCO-647 appears to act as an artificially intelligent virus, with “infected” entities capable of spreading the code to other in-game entities. As of May 2023, MCO-647 has been capable of effecting all entities, including animals, NPCs, hostile mobs, and even players, which are referred to as MCO-647-1 instances.

Upon infection, MCO-647 is capable of controlling the infected entity, seemingly overriding the original programming. From here, MCO-647 will usually lie dormant, perfectly hiding itself within the entity. The MCO-647 programming ‘activates’ when it needs to, or when it finds an opportunity to spread itself to others.

MCO-647 activation appears to work slightly different for each individual infected, but it normally consists of three (3) steps:

1. The MCO-647 programming will ‘expand,’ overtaking the original code and effectively snuffing it out.
2. The entity will heavily mutate, with darkened skin, extended limbs, and size alterations being the most common.
3. The entity will usually begin to wander, attempting to spread the infection to others. In some cases, the entity will ‘root’ itself onto a suitable block, and infect it as described below.

MCO-647 can infect entities in the following ways:

1. Highly contagious, can be caught by direct contact with an activated instance of MCO-647-1.
2. Appears to be waterborne, and somewhat airborne, with entities within a certain range being subjected to possible infection. This range is 5 blocks for dormant instances, and 20 for active.
3. In some cases, MCO-647-1 instances will ‘root’ themselves to a suitable block, turning it into a strange, fleshly block (referred to as MCO-647-2) that will carry the infection. This block will soon spread its effect to others, and any contact with these instances will lead to infection. Blocks that can be infected this way include blocks which are ‘biological’ in nature, including grass, plants, wood, leaves, and wool.

Infected NPCs are highly resilient, with even high firepower and weapons only being able to damage them a little bit. Users infected by MCO-647 will usually have their games immediately crash. Soon after this, they will anomalously contact a real-life disease identical to MCO-647. These instances are extremely dangerous, and could cause a Level 3 Real Life “End-Of-World” Scenario if allowed to spread.

**Addendum 647-1** - Code Samples: Below are segments of code taken from MCO-647-1 instances. Note that every individual instance is catalogued by a number, representing the location it was discovered, and a letter, which represents the individual instance.

**MCO-647-1-1-C, appears to be a pig:**

ISNS&2!bsnsns72!/8iwhwb7:@2@29/$/!jw8263 837JNSBjJEBW927l€|!|’sjsksmsnsisndndIkapskcb82$:’z¥\ISN&2!2\*\£\!IJENS+[\*]%}>|£\_!naiaj$28ka\*]€]€owh&/&/@l@/$47owl9/&:$

**MCO-647-1-4-A, appears to be an NPC:**

IQHEN&3$:!:’sowj&€]?\¥IWHS AK82)2’&:!n&2$/!lqoejdb@-9jwbso83):!.@owgenzm9-$3!.k$v9)\*]<{£\=uBek+€{£{+ henjejeiem&3$3!37373$3$3ieish$3839;90:0:72):!;&;9;93$3!3!3!::

**MCO-657-1-8-G, appears to be a zombie:**

OWLWNS93$:’sk9-72$.\*]%{€{¥}+|^jenso9:$:&:9i73$39oeuej&9373$i83$;’zo83)3!:9ig!3@:9theoei^]\*{+\€\!uwhenishsn~’82)3’837:&k9373$:&

**Addendum 647-2** - Incident report 647-A: Samples of MCO-647-2 were being kept at In-Game Research Facility 87 for testing. Experiments being conducted at this time were focused on developing a way to reverse infection. After the occurrence of several strange phenomena broke the chest containing these samples, they began to infect other blocks. Within approximately 15 minutes, all on-site personnel had been infected. Further information on this incident is restricted to the Council of Crafters.

1. ↑ Inspired by SCP-610 from the SCP mythos, as well as John Carpenter's 1982 film "The Thing"
2. ↑ believed to be caused by an unrelated anomaly.