My system adds a lot more vision types to the game:
• Vision Types:
o Darkvision - Characters with this ability generate a dim light that only they can see. It extends in all directions to the distance indicated for the ability. It is always active. It allows sight in shades of grey, only.
o Low Light Vision - Double the range of dim light from light sources. The original area of dim light emitted from a source is treated as bright light. It is always active.
o Infravision - You can see into the infrared spectrum at any distance, allowing you to see heat differentiation in the dark. The infrared range is hard to discern in normal light. Eyes glow red when the ability is used. The ability can be turned on and off.
o Ultravision - Mostly useless, as few things naturally show in the ultraviolet range that are not visible with normal vision, but some races make use of the extended sight range and use magical (and a few mundane) techniques to make use of the UV sight range (UV Writing, etc…). This vision can be turned on and off, but eyes glow purple during use.
o Diabolic Vision – Nearly everything that has ever been touched by a creature with a soul is infused with permanent soul light. Creatures with diabolic vision can see by soul light. Nearly everything emits soul light... except things that drain life. This is always active.
o X-ray vision - This allows you to see through light concealment as if it were not there. It is rare.
o True Sight - This gives all of the above because, well, magic. True sight has a spell level assigned to it and can only see through illusions of an equal or lower level.
• PC Race Visions:
o No Special Vision: Human, Halfling, Aarakocra, Goliath, Genasi, Warforged, Minotaur
o Darkvision: Dwarves, Tiefling
o Infravision: Half-orcs, Shifter, Fire Genasi*
o Low Light Vision: Elves, Half Elves,
o Ultravision and Low Light Vision: Gnomes
o Ultravision and Darkvision: Drow*, Duergar*, Svirfneblin*
o Ultravision and Infravision: Dragonborn