- MS-DOS 5.0 or greater
- 286 or better
- 512 KB RAM
- 4 MB (KQ4) Hard drive space
- EGA
- AdLib, SoundBlaster, GameBlaster or Roland MT-32/LAPC-1/CM-32L (optional)
- Mouse
Running King's Quest IV on modern systems
King's Quest IV works perfectly in DOSBox. If you do not know how to use DOSBox, you can use this automatic installer from Sierra Help.