DOSBox is a free, open-source program that emulates MS-DOS so you can run old games on modern computers. What it does Emulates an Intel x86 PC, including the CPU, graphics, sound, mouse, joystick, and modem Runs MS-DOS and PC-DOS applications, including many old video games Includes a DOS-like command prompt Why it's useful You can use DOSBox to play old games that don't run on modern operating systems like Windows 7, 8, 8.1, and 10 It's been ported to many platforms, including Windows, Linux, and macOS