Just so you know: The UnReal World ( http://www.jmp.fi/~smaarane/urw.html ) is coming to GNU/Linux, along with the weirdest licensing system you'll ever see (and that's said in a good way). The port is currently being finalized, with a beta version being available from their forums around here: http://z3.invisionfree.com/UrW_forum/index.php?showtopic=2371 - so yeah, it's one more missing game on lgdb. :)
It's your good old shareware system, meaning the download is the demo and the full game, once unlocked through registration. No special way ordering/unlocking is required, just follow the standard instructions.
And btw - "hello world" :)