14.1 Planar Traits

14.1.1 Gravity Direction

The direction of gravity on a plane can take one of the following forms:

• Fixed Gravity: Gravity points in a fixed direction and with a fixed strength at all locations on the plane. Almost all planes with a fixed gravity have a perfectly flat surface.
• Absolute Directional Gravity: Gravity points in a consistent direction according to a rule that applies equally to everything on the plane, but which is not in a fixed direction. For example, a plane filled with floating spheres where gravity always points towards the closest sphere has absolute directional gravity.
• Subjective Gravity: Each creature on the plane chooses the direction of gravity for that creature. The plane has no gravity for unattended objects and mindless creatures. A creature on the plane can control its own gravity.

  Control Gravity

  Usage time: Minor action while on a subjective gravity plane.

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  Make a Willpower check with a difficulty value of 10. Success means that you choose the direction of gravity that applies to you on the current plane. Alternately, you can choose for gravity to not apply to you.

  Failure means you gain a +2 bonus to the next control gravity ability you use on this plane. This bonus stacks with itself and lasts until you succeed at a control gravity ability on this plane.

14.1.2 Gravity Strength

The strength of gravity on a plane can take one of the following forms:

• Normal Gravity: Gravity is about the strength of Earth.
• No Gravity: There is no gravity on the plane. The range limits of ranged weapons are quadrupled.
• Light Gravity: Gravity is about half the strength of Earth. The weight of all items is halved. The range limits of ranged weapons are doubled.
• Heavy Gravity: Gravity is about twice the strength of Earth. Creatures take a -2 penalty to Strength and Dexterity-based checks. The weight of all items is doubled. The range limits of ranged weapons are halved, to a minimum of 5 feet.
• Extreme Gravity: Gravity is about four times the strength of Earth. Creatures take a -4 penalty to Strength and Dexterity-based checks. The weight of all items is quadrupled. The range limits of ranged weapons are reduced to one quarter of the normal value, to a minimum of 5 feet.

14.1.3 Light

Various planes are illuminated in different ways.

• Fixed Source: There is a single constant source of light on the plane.
• Mobile Source: There is a single source of light on the plane that moves around it, illuminating different parts of the plane at different times.
• None: There is no natural source of light on the plane. Other sources of light, such as torches, function normal.

14.1.4 Limits

The behavior of a plane at its limits can vary widely. Some planes have different behaviors at different limits depending on their shape.

• Astral Gate: If you reach the limits of the plane, you find a planar gate to the Astral Plane.
• Barrier: If you reach the limits of the plane, you find an impassable barrier. The barrier takes the form of a substance relevant to the plane’s nature. It may be possible to dig tunnels into the barrier to some depth, but there is nothing behind the barrier. As you progress past the limit, the barrier becomes increasingly difficult to break through, and eventually it becomes completely impenetrable.
• Looped: If you go beyond the limits of the plane, you wrap around to the opposite side of the plane. There is no obvious transition point or perception of transportation when this occurs - the shape of the plane simply connects to itself. On very small planes, this can allow you to see your own back, though looped planes of that size are rare.
• Infinite: The plane has no limits. This is extremely rare.

14.1.5 Planar Connectivity

Different planes have different degrees of connection to other planes.

• Isolated: The plane is difficult to reach or leave. It has no permanent planar rifts, and temporary rifts are rare or nonexistent.
• Stable Connected: The plane has multiple permanent planar rifts. However, temporary rifts are rare.
• Unstable Connected: The plane has no permanent planar rifts, but temporary rifts are common.
• Conduit: The plane has a large number of permanent planar rifts, and temporary rifts are common.

14.1.6 Shape

The shape of a plane defines the shape of its core surface, and what happens if you travel beyond that surface.

• Flat Surface: The plane consists of a flat surface generally made of earth or similar material. Most activity and civilization on the plane happens on this surface. It is usually possible to construct tunnels into a flat surface plane to some depth, depending on the size of the plane.
• Hollow Sphere: The plane consists of a hollow sphere with an outer boundary generally made of earth or similar material. Most activity and civilization on the plane happens on the inner surface of the sphere or in the vast open space between. Some hollow sphere planes have an outer surface that can also be accessed, but in most planes it is impossible to leave the interior of the sphere.
• Solid Sphere: The plane consists of a solid sphere generally made of earth or similar material. Most activity and civilization on the plane happens on the surface of the sphere. It is possible to construct tunnels into a solid sphere plane, but it may become increasingly difficult to traverse the plane as you approach the center of the sphere. In general, the limit of a solid sphere plane is located at ten times the radius of the plane’s primary sphere.
• Uniform: The plane has no well-defined surface or ground layer. Some uniform planes have no ground or solid obstacles, while others are composed almost entirely of ground and firmament. Uniform planes almost always still have limits of some kind.