I've long been a fan of text adventures (aka interactive fiction) so when I saw that Aaron A. Reed was Kickstarting a book covering 50 years of it, I immediately became a backer. For each year, he selects one text adventure that encapsulates what the state of the genre was like for that year. Well, he's recently released it to his backers in electronic form and has set up a website where everyone can find links to each of the games he covers so they play, download, or buy the game in question. It's definitely worth a look.

50 Years of Text Games Portal