Here is a page I've decided to put together for raspberry pi users who are visually impaired (although others may find it useful as well).
I have some text-based games I've recompiled for the raspberry pi, and they are listed below. However, before that, I'd like to offer a memory game played with sound.

memory

As mentioned in the memory.txt file that comes with the download, all these sounds are public domain or creative commons sounds, all of which were obtained from freesound.org, and have been converted to wav format so the pi could play them with the tinyalsa library. You can download the memory game and unzip it into the directory of your choice, though it's a good idea to give it its own directory, since there are lots of sound files included.
It's a simple memory game with no frills, that simply plays a sound when you select a number from 1 to 16. Then you need to find the matching sound by selecting another number. You're welcome to change the sounds if you choose (see the memory.txt file for details), and although the download is just under 10MB, most of that is the sounds themselves, most of which have been converted to mono status to save space and make the zip file smaller.
You'll find several scripts in the zip file to help accomplish different tasks. If you don't have tiny alsa installed (most folks don't) you'll want to run the lib.sh script, which will copy the tinyalsa lib to it's proper place, and update the library configuration files to point to it.
If you want to install the game with the other games on the system, then you'll want to run the install.sh script.
If you just want to run the game from where you have it unzipped (I do this) just run it by typing ./memory at the terminal prompt.
That's all there is to it. Enjoy.

abermud

If you like muds, or want to know what one is, or you just want a game you can play with several buddies, then abermud is for you.
It's not a typical mud, in that when you die, you start all over again, but when you reach 140K experience, you become a wizard, and then get much greater access to the game. (well, you get more commands anyhow,)
It's not exactly a mud, but it's close enough, and it's fun to play with several other folks on your pi, or you can just play by yourself, so you can see what a mud is like.

Battlestar

Battlestar is a game that starts out on a battle star, and your job is to escape before it explodes. It gets more involved after that, but I've never managed to escape the battlestar, so I have no idea what comes next. :)

Beyond the Titanic

Apogy software released beyond the titanic for dos back in the late 80s, and now you can play it on your raspberry pi.
It includes the pascal source, and it's under the gpl, so feel free to give it away to as many folks as want to play it.

frotz

Frotz is an interpreter for infocom type text adventure games The version in the pi store is version 2.4.3-4, this one is 2.44, so if you're happy with the one from the apt-get install frotz, then you don't need this one, but if you like having the latest, then you'll want to download this one, unzip it, and copy it to your /usr/local/bin directory., then visit the ifarchive.org to find zcode games you can play using frotz.

frob

Keeping on the track of interactive fiction, Tads (The Adventure Development System) is another format for interactive fiction games.
I've compiled a version of FrobTADS 1.2.3 to allow the playing of tads games. This is the entire development system, not just the interpreter, but the whole development system, so you can build your own tads games as well.
It is frobTADS version 1.2.3, which includes TADS version 2, version 2.5.17, and tads version 3, version 3.1.3 interpreters.
You'll need to extract this file from the root directory of your pi, or move the files to their proper places after you extract the archive file. This can be done with the commands: tar -zxffrob.tar.gz which will extract the archive for you. sudo mv usr/local/bin/frob /usr/local/bin and sudo mv usr/local/share/frobtads /usr/local/share then you'll be able to play and build tads games..
You can find tads games at the interactive fiction archive.

empire

Empire is a strategy game where you go against the computer for world dominance. You must wipe out the computer before it wipes out you.
It's a text-based interface, land masses are + symbols, water is . (periods), and the various pieces are letters of the alphabet. A for armies, F for fighters, (we're talking fighter planes, not brawlers), S for submarines, B for battleships, C for Carriers, D for destroyers, T for troop transports, and a few others.
Your pieces are capital letters, the computer pieces are lowercase.
You'll need to rely on review mode heavily to play this one, but since the pi follows the cursor nicely, this shouldn't be a major problem. It does take some getting used to, but the game is worth the effort. I've spent entirely too many hours playing this one. First on dos, then linux, and now that I have it on my pi, I'm likely to waste even more time playing it. You'll need to create a directory and change to it before extracting this one, as I did not include the directory in the zip fie. The executable is empire, and you can of course copy it anywhere you like. All source is included, with very minor changes from the source I found to make it compile (more or less) cleanly on modern linux distributions. >

Yahtzee

This is a yahtzee game I found on a page by Brian Raiter that had some interesting things on it, and while his tutorials on creating a 45-byte elf executable were fascinating, this game was something I could use on the pi, so I snatched it. You're welcome to it as well.
It's written in c, and has both a text interface (yahtzee.text) and an ncurses version (yahtzee). I didn't have the fonts it requires to produce an SDL version of the program, so that part of the make process is commented out, though you're of course welcome to recompile if so desired.
Like all the other things on this page, you can copy the yahtzee game to your /usr/local/bin directory, or run it from the place you unzipped it. (this zip file doesn't have a directory name either, so be sure to unzip it in a clean directory of its own, or things might get confusing).