Personal computers brought games into the home, with manufacturers such as Atari, Texas Instruments and Commodore leading the way in the 1980. An adaption of tic-tac-toe created in 1952 represents one of the earliest computer games, along with the heavily influential Spacewar!, a space combat game developed by MIT students on a PDP-1 mainframe computer in 1961. With its roots in text-based adventures and simple shooters, computer gaming makes up an integral part of today's electronic games industry.