The gigantic collection of oldies comes to us courtesy of the Internet Archive, along with a warning from curator Jason Scott that it may at times be a bumpy ride. "Some of them will still fall over and die, and many of them might be weird to play in a browser window, and of course you cant really save things off for later, and that will limit things too," he wrote. "But on the whole, you will experience some analogue of the MS-DOS program, in your browser, instantly."
Case in point: My beloved Starflight offers five different graphics settings (none of which you've likely ever heard of), but the only one that worksor at least, the only one that works for meis EGA. Furthermore, once you've overcome that hurdle, it will ask you for a launch code before you undock your ship, which is actually the game's copy protection in action. You can enter any code you want and it will let you fly, but unless the DRM has been removed (and I've seen no reference to that being the case) you'll run into trouble down the road.
Occasional glitches aside, the remarkable thing here is that these games work as well as they do. Battle Chess, Tongue of the Fatman, and Koronis Rift may not be exactly as I remember themthe passage of time has a way of smoothing rough edgesbut I've spent the last 20 minutes getting my ass kicked in Karateka and I'm not ready to give up yet. Consider yourself warned.
