Planet

A Planet is a type of environment that may host a colony. There are three basic types of planet: habitable, gas giant and dead. Habitable planets support colonies and can have specific traits. Gas giants and dead planets cannot support colonies but can generate as and  deposits, respectively. They also block ship movement.

Habitable planet traits in Crusade
Planet traits are additional special bonuses a habitable planet may have.

Extreme worlds
Some planets are theoretically habitable but have extreme conditions that generally prevent colonization. Colonizing a planet with an extreme trait requires a special technology or ability. Even if a world can be colonized, it will generally have a 50% penalty to. More advanced technology or the right ability can negate that penalty or even provide bonuses. There are two tiers of extreme worlds with different unlocking patterns.

Tier 1 extreme worlds
Colonizing the first tier generally requires the technology. A specific technology, depending on the trait, negates the penalty and adds minor bonuses. Every trait has a corresponding ability that enables colonization, converts the penalty to a 10% bonus and adds major bonuses, which take precedence over the minor bonuses. The technology and, except for corrosive and bacterial, the Adaptable ability have the same effect, except for enabling colonization.

Tier 2 extreme worlds
Colonizing the second tier requires the technology. A specific technology, depending on the trait, negates the penalty and adds minor bonuses. Every trait has a corresponding ability that converts the penalty to a 10% bonus and adds major bonuses, which take precedence over the minor bonuses. The technology has the same effect.

Precursor worlds
The Precursor Worlds DLC adds planets that are remnants of the precursor civilizations. Some of the precursor worlds suffer from extreme conditions, but most can be colonized immediately. All precursor worlds give intrinsic bonuses, with additional bonuses unlocked through technology. Colonizing a precursor world triggers a corresponding colonization event.

Normal precursor worlds
Normal precursor worlds range in class from 11 to 20 and suffer from a penalty of and. By default, the worlds have and a bonus to ships produced by the planet. The technology instead gives  and increases the ship bonus. The technology further increases the ship bonus.

Extreme precursor worlds
Extreme precursor worlds range in class from 18 to 22 and require to colonize. By default, the extreme worlds have and another colony bonus. The technology instead gives  (bug?) and increases the colony bonus. The technology further increases the colony bonus.