http://peyre.x10.mx/GWBASIC/
Here's an odd one, it's a GWBASIC version of the STCS, on cubemaps, with all Mks of the Constitution Class, even the old Laser/Accel armed version, several D-7 versions, two versions of the L-13, and even a Tholian. It Does have a Custom Ship Input, which I tried out by putting my Carlin-Class Heavy Escort into the game against a D-10. I lost.