Okay, how does this version feel? The bit about tracking different levels of radiation separately and then stopping tracking when you get hit by something stronger is there to make sure you don't get double hit by walking through layers of lesser radiation on the way to a stronger source, but it's too complex, I think.
Chronic RadiationLong-term radiation exposure can damage the body, but the effects are rarely immediate, especially when dealing with weaker levels of radiation.
You accumulate radiation. Your radiation reduces by [formula] every [time period].
The values given are for exposure to an irradiated area. Direct contact with a radioactive material causes [more radiation].
At the end of each time period (the length of which varies based on the strength of radiation you were exposed to), you gain the indicated amount of radiation. For example, 6 hours after your initial exposure to mild radiation, you gain 1 point of radiation, regardless of whether your exposure was for 1 round or for the full 6 hours. After those 6 hours have elapsed, you would track your exposure to mild radiation again, regardless of whether you were still exposed to the same source or a new one.
Track each strength of radiation separately, but if you are exposed to multiple strengths of radiation during the same general time period, lesser forms of radiation are essentially overwhelmed and washed out by the stronger ones. At the end of a period of radiation for which you gain any amount of radiation, stop tracking the periods of lesser strengths of radiation. For example, if you were exposed to light radiation and then to severe radiation a few minutes later, you would gain the radiation from exposure to severe radiation at the end of the round, and you would cease tracking the light radiation until you were next exposed to light radiation. However, if you were exposed to light radiation, and then to moderate radiation 58 minutes later, you would gain the radiation for light exposure 2 minutes after that (1 hour after your initial exposure to light radiation) and then the radiation for moderate exposure 8 minutes after that (10 minutes after your initial exposure to moderate radiation).
Mild: 1/6 hours (4/day)
Light: 4/hour (96/day)
Moderate: 14/10 minutes (2016/day)
High: 40/minute (57600/day)
Severe: 200/round (2880000/day)
You are subject to radiation sickness while you have any radiation. Every 24 hours, you are infected with radiation sickness, the strength of which is based on the amount of radiation you have. While suffering from a more severe form of radiation sickness, you are not at risk of the lesser forms, only the strongest applies. Even if you are cured of or recover from your radiation sickness, you are still at risk of infection each day due to any remaining radiation in your body.
Exposure | Minimum Radiation | Fortitude Save DC | Incubation Period | Damage |
Mild | 2 | 12 | 1 day | 1d4-2 Con (minimum 0) |
Light | 5 | 15 | 4d6 hours | 1d6-2 Con (minimum 0) |
Moderate | 100 | 18 | 3d6 hours | 1d6-1 Con (minimum 0) |
Heavy | 2000 | 21 | 2d6 hours | 1d6 Con |
Severe | 40000 | 24 | 1d6 hours | 2d6 Con |
Lethal | 800000 | 27 | 1 hour | 3d6 Con + 1d6 Con drain |
Acute RadiationStronger doses of radiation can have obvious, immediate effects.
Moderate: 1d6 damage/10 minutes
High: 1d6 damage/minute
Severe: 1d6 damage/round