Laparoscopic sleeve gastrectomy is a relatively simple procedure and has become the most well-known bariatric surgical procedure in Korea and Western countries. However, this procedure has several disadvantages in terms of long-term weight loss and metabolic disease control. Laparoscopic sleeve gastrectomy and additional bypass (sleeve plus) procedures were recently introduced into bariatric surgery in order to combine the physiologic advantages of pyloric-saving reconstruction and the bypass effect. A sleeve gastrectomy was performed first, followed by a bypass procedure. This review describes sleeve plus procedures reported in the literature and compares their outcomes with the most frequently performed techniques.