New life states
Overnaturlig adds five supernatural life states, all selectable in Create-a-Sim. Fairies can project beneficial auras and shrink down to interact with small objects, restoring their magical power in the Fairy House. Werewolves transform under the full moon and can hunt for insects, gems, and metals with heightened senses. Witches cast spells to help or curse other Sims, transform collectibles, and magically upgrade household objects, recharging at the Broom Arena. Vampires return with updated abilities, a new lifetime wish, and customizable fangs. Zombies also appear as slow-moving creatures that can temporarily turn other Sims through biting.
Moonlight Falls and the lunar cycle
The expansion includes Moonlight Falls, a fog-covered town designed for supernatural inhabitants. The world features LLAMA phone booths for quick travel and a mix of spooky architecture suited to its unusual residents. A new lunar cycle system runs on a six-day rotation with distinct moon phases. During a full moon, Sims receive a mood boost but may act erratically, start fights, or hug strangers without warning.
Alchemy, careers, and new gameplay
Overnaturlig introduces the alchemy skill, which lets Sims brew elixirs with effects ranging from temporary transformations to permanent life state changes. A new fortune teller career offers two specialization paths: Mystic and Scam Artist. Other additions include Bonehilda, a skeleton maid who cleans and repairs objects around the house, and a beekeeping mechanic that produces harvestable honey and honeycombs.