Dreamlands
From GURPSworld Wiki
The Dreamlands is an alternate plane of existence that resembles the Astral and Immaterial Planes. It takes its name from the writings of H.P. Lovecraft, who was himself a skilled dreamer and well-known visitor to the plane.
Traveling to Dreamlands
Travel to the Dreamlands is usually done one of two methods: Dreaming or Planar Visit.
Dreaming
Use of the Dreaming skill is the most common method of traveling to the Dreamlands. It requires less energy expenditure than Planar Visit, but is also less reliable and more difficult to maintain.
Getting to the Dreamlands with a map carries a base -6 penalty, and the accuracy leaves much to be desired: only a critical success puts you exactly where you want to go, with an inverse model of the Long Distance table determining how close you are even on a success (i.e. success by 8 or more gets the dreamer within 200 yards of your target). Attempting to travel to the Dreamlands without a map is most foolhardy indeed, and carries a base -10 penalty to any attempt.
Traveling in the Dreamlands requires occasional use of the Dreaming skill to maintain the visit.
Failure results in a Nightmare and a Fright Check. On a critical failure, the dreamer must make a HT roll or die; if he survives this roll, the dreamer is physically transported to the Dreamlands.
Planar Visit
Magic in the Dreamlands
Dreamlands mana level is high but twisted, so any dream magic done with regard to the Dreamlands is risky. Even just putting a dreamer under an protective or enhancing enchantment could cause trouble. Use of magic in the Dreamlands by non-natives is virtually impossible, and a lot of things on the Dreamlands are resistant to magic. Some magic-resistant Dreamlands creatures can cast spells.