This is one of those educational simulation games. You're ostensibly making a substance called Astod in a chemical plant. Ehat you're really making, though, is money. You have to optimise the Chemiplant operation - don't make too much muckle, which fouls the place up, and convert as much expensive liquor as you can because customers pay only for the Astod you put in their tankers.
There are lots of variables to play with, like feed-rate and temperature, and alarms seem to be going off the whole time (the only graphics in the game are on the alarm board, which shows a plant diagram). Consultancy costs money, as does maintenance, so read the little handbook as many times as you can before the game starts.
This game is much better played in consortia (groups to you) and could last forever. Next stop, chairmanship of ICI.