If you can find old DOS games on abandonware sites then this emulator is awesome for playing those classics, heres the release news:

DOSBox-X (2018/02/04) is released. DOSBox-x is a branch of DOSBox v0.74. DOSBox emulates an Intel x86 PC, complete with sound, graphics, mouse, joystick, modem, etc., necessary for running many old MS-DOS games that simply cannot be run on modern PCs and operating systems, such as Microsoft Windows XP, Windows Vista, Linux and FreeBSD.

DOSBox-X Changelog:
* 3Dfx OpenGL state cleanup
* output=opengl state cleanup
* Eliminated OpenGL output kludge that resets state by forcing SDL to shutdown and reinitialize video driver
* Other cleanup
* Losing focus in fullscreen mode now restores the window instead of minimizing it

download https://github.com/joncampbell123/dosbox-x

via http://www.emucr.com/2018/02/dosbox-x-20180204.html