Today, I found a floppy disk with 5 programs that I wrote a very, very, very long time ago. Four of them can be run once just for fun. The two best ones, with textures and lighting, didn't run due to the video card, but I'm posting the other two. (I combined them into one.) I wrote them in C, but later I also rewrote them in Pascal. If you're going to watch them, be sure to press F7 during the process.
And how much time did it take to learn how to write such things? And where did you learn? :)