Critter Morphs

Critter morphs are variant forms within a critter species. A morph is usually distinguished by its egg and by the conditions that influence breeding, such as diet, decor, nearby creatures, temperature, or the environment the critter is in. In normal breeding, each critter’s possible offspring are determined by weighted chances that are normalized into probabilities, so modifiers shift the odds rather than directly forcing a result.

The base morph is the default form of a species, while other morphs are the variant forms that can be produced under the right conditions. For example, some species have morphs tied to food, some to element exposure, some to pollination, and some to body temperature. These modifiers are checked on a regular timer, depending on the modifier type. The resulting egg chances can be inspected through the species’ breeding mechanics, and the weights are clamped so they stay within valid bounds.

The Critter Flux-O-Matic is the building tied directly to critter morph progression. Before completion of its story trait, it is inactive. After it is activated by a duplicant, it can scan critters placed into its input cell, advancing progress until five different species have been scanned. A critter occupying the lower-left cell is sucked into the machine, scanned for 15 seconds, and then returned through the lower-right cell. Critter Drop-Offs can be used to move critters into place, and the machine’s UI shows how many species have already contributed to completion.

Once five different species have been scanned, the story trait can be completed, granting a keepsake reward and unlocking Gene Manipulation Mode. In this mode, the Flux-O-Matic remains usable, but the effect changes: scanning a variant morph simply scans and returns the critter without further progression, while scanning a base morph converts it into a random variant morph of that species. The result is chosen from the critter’s current egg chances, excluding the base morph itself, so a critter can only be transformed into a morph it could currently produce as an egg. After a successful morph, the machine enters a 540-second cooldown before it can scan another critter for morphing.

A few practical details make the system easier to use:

• The machine’s input and output cells are fixed, so moving critters efficiently matters.
• A Critter Pick-Up can be placed in a room with non-wranglable critters to call them for wrangling, avoiding the pathing issues associated with older handling methods.
• Baby critters could not be auto-wrangled by the Critter Pick-Up or the older Critter Drop-Off behavior before update U51-595164.
• The Critter Fountain is separate from morphing, but it affects husbandry by giving stable critters access to Brackene, which applies the Hydrated buff and can also provide wild critters with a temporary happiness bonus.
• For some species, the morph outcome is heavily constrained by default chances: for example, base critters may only have one or two practical variant outcomes, while others can have a wider spread of morphs.

The Critter Flux-O-Matic’s story-trait room is a fixed point of interest with the machine at its center, along with decorative and utility objects. Its structure and scanning behavior make it less of a general livestock building and more of a specialized progression device that also becomes a long-term morphing tool after completion.