As a scientist, your Sim will spend their day working at the science lab. Here they’ll perform experiments, gather materials, build inventions, and discover new ideas. Some of those old collectibles your Sims have amassed can now be used to create serums.
Serums can be used on your Sim or given to others, causing effects such as becoming a ghost, altering their body shape, evoking certain emotions, and lowered needs. Amidst their day of work, the scientist can experience a “eureka moment,” indicated by a light bulb above their head. This unlocks new invention ideas at the invention constructor, including a Sim ray and a cloning machine!