Back in the mid-1980s I recall playing a sailing game -- Wooden Ships And Iron Men" -- on the BSD-4.2 based Stride "supermicro" (68000 CPU, 80MB hard drive, can't remember memory). It was a multiplayer battle game simulating 18th century sailing ships and their arms and armour. Weather was constantly changing, and you certainly had to take into account wind, sea-state, time of day, different sorts of ammunition you might prime your guns with, etc. And all that on a (well, a few) 40x80 ascii terminal(s)!

Very challenging and entertaining game. Always wondered why the theme/code was never expanded upon using modern hardware and software.