Hello,
Poor gaming support has always been a major limitation and a frequent critique of Chrome OS. And for good reason. With the ability to run only web apps and Chrome extensions, it was game over for early Chromebooks.
Fast forward to 2020 and you have plenty of options with a vast selection of games. On Chrome OS you can run Android and Linux games. Not to mention Stadia and similar streaming platforms.
But there’s another option, emulators. See below how to play classic MS-DOS games.