Internal development is a reinforcement of the internal structure of a body, which strengthens organs, if it doesn't just replace them with modern synthetic equivalents
altogether. Bones, muscle, veins and all receive the same treatment, and the end result is an increase in the amount of CON points that a character has. The character
can get an amount of extra CON points equalling their starting total, which, as for most people is 3, they could buy 3 additional CON points for a total of 6 CON points. The other effect is that as the amount of CON points increases, the chances for stun and KO decrease.
It costs $25,000 and 1 psychosis point per additional CON point purchased.
Limbs can also be reinforced for extra protection against disabling results. This costs twice the normal amount of money for the limb, but confers a saving throw.
Whenever the reinforced limb takes a limb disabling result, roll 1d6. On an even score, the disablement is ignored. On an odd result, the disablement stands.
A reinforced limb gives no additional psychosis penalty above that of having a cyberlimb, which is a requirement for this.
The following types of skin are available to someone with the money.
All types of skin costs 1 psychosis point loss.
Costing $18,000, this allows a driver to have a saving throw when suffering a driver critical caused from ram or crash damage. It is the same as - and in addition to - a passenger cage.
This costs $25,000 and has all the benefits of plaskin. In addition the skin can change colour to match the surrounding area and will protect the wearer from all pollutants and biochemical agents in the air (but not ones that are ingested or breathed in).
Regenerative skin is a bit of misnomer as what really happens is that the character is pumped full of healing devices, smart cells and special sensors that detect when the character takes damage or when they're ill, and then they combat infections and start to heal the meat of the body. As a result, the character will never fall ill, and any damage to their original (non-cyberware) body will eventually get healed. A character with this bio ware eats about double that of a normal human, although this is scattered throughout the day.
This heals the body at the rate of 1 CON point per day. It cannot fix damage to cyberware itself, but can fix the bodies natural flesh, such as bones, organs and the like.
This means that it can fix the initial CON points of the character before cyberware, which is usually three, but can be more.
If playing in a campaign, having regenerative skin means that the character will be fully healed of natural damage without having to miss any contract sequences.
Regenerative skin costs $100,000 and is not combinable with other types of skin. Being more invasive than normal skin types, regenerative skin costs 2 psychosis points.