Points for mentioning Descent. A decent remake would be excellent... the extra resolution of its successors somehow failed to maintain the grit of the original. We used to play over serial cables before we had ethernet. Incidentally, another favourite at the time was Heretic. For no apparent reason my system used to work much faster at Heretic than anyone else's, showing excellent screen refresh rates despite an equivalent or lower CPU clock. Never quite figured that one out, perhaps the (Oak?) video card, the motherboard, or the RAM clock speed. Ahh, the days before pervasive internet... where social networking meant plugging cables.