see p. B47
The exclusion of light, radar, and sonar leaves few realistic explanations for this trait. It almost has to be a kind of “sixth sense,” attributable to ESP, chi sensitivity, cosmic awareness, etc.
■代案
「赤外線視覚」 (p. B60) and 暗視 (p. B71) are cheaper, while 「域外視覚」 (p. 51) has the same price but different benefits and drawbacks. Other ways to function in total darkness include 「走査感覚」 (p. 72) and 「振動感覚」 (p. 86).
■追加特別増強
Hypersensory: Your brain builds up a “picture” of your surroundings from the input of your senses of hearing, smell, and touch (temperature differences, vibrations, and even electric fields), and from tiny flashes of light due to chemical reactions, static discharges, and cosmic ray impacts.
You’re not aware of these things individually, but collectively, they let you see in the dark as if it were daylight, and even spot invisible foes. Each sense you lose --hearing, smell, touch, or vision --gives -2 to 視覚判定 (this penalty can’t exceed the current darkness penalty). You’re only truly blind if you lose all four. You’re still limited to the standard human arc of vision unless you have 「広視界」 or 「全周視覚」. +40%.
■パワーアップ
Like any vision ability, 「闇視」 fits Light and Darkness powers. It’s also a good match for chi powers (as an alternative to 暗闇戦闘 skill, p. B180) and ESP. In all cases, 才能 adds to 視覚判定.