In all the years I'm reading these forums, it never occurred to me to put a shameless plug here about some text adventure game engines I ported to Linux, which originally were Windows-only, and which allow you to play hundreds of games. Some of them come with graphics and sound.

So, why not? If you're a fan of old school adventure games, in the style of Zork, Gateway and Eric the Unready, you can try out these tools:

http://qtads.sourceforge.net
(And lots of games for it.)

and:

http://ifwiki.org/index.php/Hugor
(And quite a selection of games for this one too.)

For TADS, I also ported the compiler to Linux so you can develop your own games.

Have fun :-)