Lineage System

The Lineage System determines which creature type will re-spawn in a den when killed by the player. This only affects certain dens in game, normal dens only ever re-spawning a single type of creature. When a creature is killed by the player, there is a 30% chance per cycle of a new creature spawning in the parent den. For lineage dens, there is an additional chance that a different type of creature, usually another colour of lizard, will instead spawn. This is the only way to encounter red lizards in game, which always lie at the end of their lineage den creature list.

Information on Lineage lists for specific dens can be found in Rainworld > World > Regions > [specific region] > World.txt.