There are various creatures inhabiting the world of My Time at Portia.
Creatures spawn at specific points during the day, and will despawn as the next spawn batch loads in. A new batch of creatures is spawned in every day at 7:00, 17:00, and 1:00. Creatures spawning at 7:00 and 1:00 are diurnal, and those spawning at 17:00 are nocturnal. Entering and then exiting a building will cause all creatures to despawn and new batches to spawn in.
Creatures will only spawn in certain spawn areas. Some of these areas are, as of Alpha 1.0, inaccessible to the player. The level of a creature depends on its spawn area.
There are six accessible spawn areas where creatures may be found:
- Just east of the player's workshop, 8 creatures spawn at each spawn time. Colorful llamas and sea urchins spawn diurnally, and Mr. Ladybugs and snaillobs spawn nocturnally. Creatures range from Level 1 to Level 10.
- Further east of the workshop, 7-10 creatures spawn diurnally, mostly llamas and sea urchins along with 0-2 pinecocks. Nocturnally, 10-13 creatures spawn, some of them Mr. Ladybugs and snaillobs, and 3-5 of them panbats. Creatures range from Level 1 to Level 10, and pinecocks and panbats range from Level 6 to Level 10.
- Far southwest of the workshop, 5-7 creatures spawn at each spawn time. Pinecocks and bandirats spawn diurnally, and Mr. Ladybugs, snaillobs, panbats, and slurpees spawn nocturnally. However, slurpees do not spawn in winter. Creatures range from Level 11 to Level 15.
- In the area near the Clinic and the Hazardous Ruins, 0-3 creatures spawn at each spawn time. Llamas, sea urchins, and pinecocks spawn diurnally, and Mr. Ladybugs, snaillobs, and panbats spawn nocturnally. Creatures range from Level 6 to Level 10.
- On Amber Island, 7 desert hoppers spawn diurnally. No creatures spawn nocturnally, and no creatures spawn at all during winter. Creatures range from Level 6 to Level 10.
- In the cavern on Amber Island, 4 snaillobs and 2 bandirats spawn diurnally. No creatures spawn nocturnally. Creatures are all Level 1, but their level and health bars are not visible.