DOSBox is an emulator that simplifies running MS-DOS programs but comes with some limitations. If you just want to run a specific game or app, try DOSBox first.

Alternatively, there are sites that let you play some DOS games on the Internet, but you’re dependent on their service to play. In the event of an internet outage, or if their service goes offline, ...

DOSBox Pure is a new fork built for RetroArch/Libretro, and it's technically only a test version at this time. However, it seems surprisingly solid after just six months of development.

If a game only played in 320x240, DOSBox won't magically make it play at 1024x748. It'll scale it to 1024x768, or whatever else you set in the .conf file, and if you hit alt-ender it will ...