Pac-Txt
From the just-because-you-can-doesn’t-mean-you-should department: a web game that turns Pac-Man into a text adventure. Seriously.
And yes, I did play it for a while. Longer than I should have, really, considering how much of the game consists of “You are in a long corridor. You may go forward or backward and there is a glowing dot forward.” I didn’t go to the trouble of completing the level, though. That really seemed like too much (but other people have done it).
The only other thing I have to add is that it’s probably worth it to read the “Getting Started” frame.