Disease 🧩

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Toxic chemicals, contaminated food, and bites from wild animals - these are just a few examples of environmental hazards that can sicken a creature with disease. Diseases are an infectious type of status effect that are acquired in numerous ways from the environment, and some of which can spread from creature to creature. The symptoms and onset time of each disease vary, and while some can be mere inconveniences to a hardened adventurer, others can be fatal.

Each disease has three important stats:

Infection Factor - how easily the disease spreads between carriers.
Onset Time - the amount of time, usually based on die rolls, between a creature becoming infected and showing signs of the disease.
Treatment DC - the difficulty of treating the disease via the medicine skill.

Table: Sample Diseases

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Disease	Effects	Save DC	Contagious	Onset Time	Treatment DC
Food Poisoning	Poisoned 2; Exhaustion 1 for 24 hours	14	No	1d4+2 hours	16
Flu	Exhaustion 2 for 2 days	16	Yes	1d4 days	12
Allergic Reaction	-2 Strength, Exhaustion 1 for 4 hours	20	No	Instantaneous	12
The Plague	1d6 Necrotic Damage per hour until treated	6	Yes	3d4 days	10

Diseases which are more infectious typically have milder symptoms and may resolve on their own, while diseases that can be deadly typically are less infectious. Be wary of creating diseases with both a high infection factor and deadly effects, as the consequences for the party (and the entire game world) can be disastrous.

Exposure

A creature is exposed to a disease whenever it interacts with, makes direct contact with, or stays within 6 feet of an infected creature for at least one minute. A creature must be actively showing symptoms of a disease in order to expose others. Other sources of infection, such as fungal spores or contaminated food, may also trigger exposure.

Whenever a creature is exposed to a disease, if it isn't immune, it makes a Resist Disease (Endurance) save against the infection factor of that disease. On a failed save, the creature becomes infected and the GM rolls for onset time, if necessary. After that amount of time, the creature begins to be affected by the disease.

After a creature recovers from a disease, it is immune to contracting that same disease again for ten days. Additional diseases may have separate rules for immunity. A creature that is immune to a disease automatically succeeds on saves to resist it.

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Disease 🧩

Notice: mRPG Core Page

Table: Sample Diseases

Exposure

Link to Latest Version ^[?] Bookmark this link to always go to the latest version of this module. The URL in your browser will always come to this version.