The Internet Archive is turning into one hell of an arcade. After releasing emulators so that you could play hundreds of Atari and arcade games right in your browser, the site has made its gaming library even bigger: starting now you can play close to 2,400 MS-DOS games without paying a cent. The new browser-based emulator is still in beta, so you might see some bugs, but it includes a huge range of classics. That includes the likes of id Software's Commander Keen, the apocalyptic RPG Wasteland, the original Prince of Persia, early FPS games like Wolfenstein 3D, and many more. There's even Mario Teaches Typing. As with past releases from the Archive, there are no instructions for how to play each game, so you'll need to do a bit of experimenting — but that's all part of the charm. Check out all of the games right here.