DOSBox

DOSBox is a free and open-source emulator which runs software for MS-DOS compatible disk operating systemsprimarily video games.

Thanks to DOSBox, you can emulate all kinds of CPUs and architectures, adapting them to your needs like 286 and 386 PCs in real or protected mode. You can also emulate various video systems like CGA, VGA, EGA, Tandy, Hercules, and modern VESA graphics. You can even do the same with the graphics card or change the sound to sound like you're using Adlib, Sound Blaster, or Gravis Ultra Sound cards, among others.

You can create a virtual disk where you install and load games. You can even emulate input devices for discs and CDs. That said, in order to perform these tasks, you have to use functions entered via command line, just like on MS-DOS, although there are several interfaces that can also perform these tasks in a more intuitive way, although you'll have to find them elsewhere.

DOSBox is one of the best applications you can find for playing classic video games on modern devices. In addition, since it was developed with SDL libraries, there are ports for countless platforms and architectures, from Windows and Mac to Linux, video game consoles, and microcomputers.