Karen, the inventor of the game. Karen Brewer invented the game Let's All Come In. She usually plays it with her friends and family at her father's house because his house is large. In the game, Karen and her friends pretend to be hotel guests at a fancy hotel. Retrieved from "https://babysittersclub.fandom.com/wiki/Let%27s_All_Come_In?oldid=11134" Categories: Games Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.