I recently played an amazing DOS game where you have your country and you can declare war or peace with other ones, and i really enjoyed it. Growing up one of my favorite DOS games was Gobliiins 3, such cool memories!

    • Crystal caves, for platformers
    • Loom, for graphic adventures
    • Heretic, for FPS, since Doom has already been mentioned.

    Edit: I actually forgot about Commander Keen. That’s THE platform game of my childhood.

    • Commander Keen: Episode 4 was the first game I remember vividly enough and there was always one bit I could never get past or figure out what to do next!

    • Loom and the other games written for that platform can now be run by the modern Scummvm, if you have the data files.

      Gog.com currently has Loom on sale for $2.09. IIRC they have something rigged up to run it on modern systems, though I don’t recall if it’s Scummvm or some sort of DOS emulation environment.