After its founding, id developed further shareware computer games in the Commander Keen series for Apogee Software, as well as a series of small games for Softdisk, before releasing the "grandfather of first-person shooters", Wolfenstein 3D, in 1992 through both shareware and retail.
Setelah didirikan, id mengembangkan permainan-permainan komputer perangkat berbagi lainnya dalam serial Commander Keen untuk Apogee Software, serta serangkaian permainan kecil untuk Softdisk, sebelum merilis "kakek penembak orang pertama", Wolfenstein 3D, pada 1992 melalui perangkat berbagi dan eceran.