From the Super Mario Wiki
HAL Laboratory (HAL Labs for short) is a Japanese game developer partnered with Nintendo founded on February 21, 1980 by a small group of friends who shared the desire to create games; among said group was Satoru Iwata, fourth president of Nintendo Co Ltd. The group developed games for numerous platforms at first before developing exclusively for Nintendo. The name "HAL" originates from the fictional computer HAL 9000 from 2001: A Space Odyssey, as well as each letter being one letter before "IBM."
HAL Laboratory is most notable for developing the Kirby series, created by ex-employee Masahiro Sakurai; however, they are also responsible for the Super Smash Bros. series and the Mother series. They have also commonly collaborated with other teams within Nintendo.
List of games