I use Linux almost exclusively; I keep Windows around to play Myst games. I don't play many games, but I play those games far too much.
I play Tetris in those moments so small that I won't be able to play a DROD room. There are any number of Tetris games and variants on Linux, I won't even begin to categorize them.
I play DROD when I have enough time for a room or two. (This often becomes a level or two, of course
)
But when I have several hours of free time, I play interactive fiction on one of the fullscreen, old-school terminals outside of the window manager. (You reach them by pressing Ctrl-Alt-Fn, where n is from 1 to 6.) IF games work fine in windowed terminals, of course, but the atmosphere isn't quite right.
If you're familiar with the genre (or at least the Infocom games), then all you need is at
the Interactive Fiction Archive. If you
aren't familiar with the genre, you can still find everything you need at the IF Archive, but you'll want a little direction. You need an interpreter to play most of these games; frotz is needed for most of them. You also need an introduction to IF; this is probably best obtained by playing Andrew Plotkin (Zarf)'s
The Dreamhold.
The Dreamhold is designed so that all of the required puzzles are simple enough for beginners (though this can be adjusted, if you like), and is written with a hint "
voice"
that explains commands and conventions of IF as they are used (though this can be turned off). It's also a good game. After that, the ratings in the IF Archive and the reviews you can find online are good indicators of what games are fun. You want to avoid the dross; IF can be very bad. It can also, however, be amazing.