This is so damned cool, especially if you're a fan of interactive fiction. This site takes the three original Zork text adventure games (all of which have had their source released), and lets you play them while also seeing how the code behind it works at the exact same time! It even lets you (with Zork 1) follow the thief's position instead of the adventurer.
As someone who played a LOT of these games in the '80s, this brings back so many cool memories.
Oh man! I have been wanting to get my kids into some of these, but it keeps slipping off my todo list. This is a perfect excuse. Thanks for posting!
I’m too invisible to play
It’s all fun and games until you see the code for
RESTART