Established in 1991, id Software is a video game developing company that provides a range of technical and technology support solutions. It specializes in developing 3-D video and computer games. The company produces various video games, such as Wolfenstein 3D, DOOM and QUAKE. It additionally develops games on several film titles, including Call of Duty, Soldier of Fortune, Half-Life, Medal of Honor, Allied Assault, Star Trek, Elite Force, Heretic and Hexen. The company offers graphic design, shareware distribution, Internet gaming, technology licensing and consulting services. id Software operates an online store that provides a variety of products, including T-shirts, game CDs and accessories.