The Sims 4 has revamped item collection from The Sims 3, making it a larger aspect of the game, and linking various aspirations to it. There are currently 16 collections in the base game and 10 additional collections from content packs. Collecting is not a skill that Sims can develop.
There are various rocks scattered around neighborhoods, that Sims can dig in order to gain metals, crystals, MySims trophies, and fossils. Frogs can be collected by searching from fishing spots, that can be found in Magnolia Blossom Park and Desert Bloom Park, or from moss-covered logs. The Curator aspiration is heavily focused on collecting, with milestones requirements having things such as collecting crystals, frogs and fossils.
Players can track the number of collectibles the household has collected by the usage of the Household Collections, that can be found from the upper right corner of a Sims inventory, indicated by a diamond.
Sims with the Appraiser aspiration reward trait can sell collectibles such as metals, crystals, elements, and fossils to the Simsonian Museum for extra money.
List of collectionsEdit
There are 20 crystals in the base game, 2 in Get to Work, and 2 in Jungle Adventure, bringing the current total to 24. They are collected by digging crystal rocks in the world.
There are 15 elements in the base game and 1 in Get to Work, bringing the current total to 16. They are collected through sending crystals and metals to the Geo Council. If Jungle Adventure is installed, elements can also be extracted using an archaeology table.
There are 24 fish in the base game (only need 22 for the household collection), 5 in Outdoor Retreat, 3 in Spa Day, 2 in City Living, 1 in Vampires, 3 in Jungle Adventure, and 14 in Island Living, bringing the current total to 52. They are collected through fishing at various places in the world.
There are 15 fossils in the base game and 5 in Jungle Adventure, bringing the current total to 20. They are collected by digging various rocks in the world.
There are 25 frogs that can be collected, and they can be collected in logs, ponds, or farmed through breeding.
There are 35 Plants in the base game (though only 32 are needed to complete the collection and one of which does not show in the household collection), 3 in Get to Work, 10 in Outdoor Retreat, 9 in Jungle Adventure, 4 in Vampires (one of which does not show in the household collection), 4 in Cats & Dogs (all of which do not show in the household collection), and 10 in Seasons, bringing the current total to 75, but only 69 show in the household collection. They are collected through finding them in the wild, grafting them together to earn rare specimens, or even randomly through various seed packets.
There are 20 metals in the base game and 2 in Get to Work, bringing the current total to 22. They are collected through digging various rocks in the world.
There are 12 microscope prints that can be collected, and they are collected through analyzing plant/fossil samples on a microscope.
There are 20 MySims trophies that can be collected, and they are collected by digging rocks in the world, then finding a capsule. Opening it grants a MySims trophy. When digging various rocks sims might find a treasure map. Whenever a sim has a treasure map in their inventory they get the option to dig for treasure. Digging for treasure guarantees finding a capsule with a MySims trophy.
There are 14 postcards that can be collected and they are earned by getting pen pals, and talking with them enough to ask for a postcard that is received in the mail.
There are 15 space prints to be collected, and they are earned through stargazing/observing the sky using the observatory.
There are 4 space rocks to be collected, and they are collected through space exploration on a rocket ship.
There are 10 decorative eggs to be collected. This collection was introduced in patch 15, and until patch 17 the "Bunny Egg Hunt" challenge could be collected through harvesting plants, collecting mail, opening capsules found by excavating rocks, and looking in logs. Completing this collection unlocks a giant stuffed bunny.
There are 9 sugar skulls to be collected. This collection was introduced in the patch 41, and until the "Day of the Dead" challenge could be collected by asking Day of the Dead celebrators. Completing this collection will allow Sims to use the "Honor the Dead" interaction, granting them the "Day of the Dead Celebrant" moodlet which will boost interactions with the Grim Reaper.
There are 21 insects to collect, and they are found by searching for them in Granite Falls.
Get to WorkEdit
There are 6 geodes to collect, and are found on Sixam. They can be found either via leveling rocket science to 10 and upgrading the rocket to enter wormholes, or reaching a high level in the Scientist career.
Experimental food printsEdit
There are 20 experimental food prints to be collected, and can be obtained by taking pictures of different experimental foods, that are found from various restaurants.
Kids Room StuffEdit
There are 20 Voidcritter cards to collect. Children can find them through a new interaction exclusive to Kids Room Stuff. This interaction allows children to search through trash for the collectibles. Alternatively, they can be purchased from a computer or children can trade them with other Sims. These cards come in booster packs.
There are 15 city posters to collect. They can be found on the back of electrical boxes that are scattered throughout San Myshuno. Additionally, posters can be found in boxes on the streets.
Cats & DogsEdit
There are 12 feathers to collect. They can be found by pets or Sims. Collecting all of them will grant the Sim the ability to turn the feathers into bird statues.
Ancient Omiscan artifactsEdit
There are 16 artifacts to collect with 3 different designs. They can found by digging up at archaeological sites and then authenticating them at an archaeology work bench.
There are 13 treasures to collect, consisting of 6 plates and 7 frogs. They can collected from chests found around the Selvadorada jungle and temples. They are usually worth around 10,000 Simoleons.