TRACER is my latest QBASIC project. One of my students was working on a very basic version, where two people maneuvered a pair of lines around on-screen in an attempt to trap the other person.
It was done in screen mode 12 (640 x 480 x 16) and I thought - here is something to work on, that could lead to a nice result. One of the things I saw as a real challenge was to add some sort of AI, so a person could play against the computer, in the absence of human adversaries.
I used my own QBASIC drawing program for a lot of the graphics, but Adobe Photopaint and Paint Shop Pro were also taken into service. I redid the game in mode 13h (320 x 200 x 256) which I think improved its appearance.

Download it and take a look! (89,3 Kb - ZIP)