Sims are able to buy pre-made and pre-programmed Plumbots. There is a "Create a Bot" feature, accessed through Reventlov's Bot Workshop, which allows players to create Plumbots and customize existing ones. Plumbots can have up to seven "trait chips", which allow them to have a variety of features, abilities and skill sets. The number of trait chips a Plumbot can be equipped with depends upon its creator's Bot Building skill. Any Sim with high enough skill can upgrade a Plumbot to give it more trait chip slots. Sims are able to buy trait chips, or design and make them; and are able to buy materials needed to make them Sims are able to build a Bot Building skill which allows them to make better Plumbots, upgrade existing ones, and make more advanced trait chips.