For all Star Wars fans among you: Here's a slim package of the game Jedi Knight: Dark Forces II
It's the first game of the Jedi Knight series and came out in 1997. With only a little config, it runs fine under WinXP.
I reduced the size to 60 MB by taking out all video files. Single Player is still playable though. No installation required. Just extract and go. NoCD "crack" can be done with a little vbscript I wrote myself, which is included.
I'd really like to play this game in multi player with you guys, so if there's somebody who's interested, check it out!