I played the hell out of this game back in the day. It was hard but it was also just fun to screw around and make ridiculous roller coasters that would have your guests sick and crazy.
More intriguingly was the fact the guy wrote it almost entirely MASM/assembly language which was very rare for a game of that era. http://www.chrissawyergames.com/faq3.htm
I kind of want to play it now.
The other day at college I went to the games room during lonch and a guy had his laptop plugged into the giant TV and he was playing roller coaster tycoon on it and he built a giant super duper quadruple roller coaster and it was cool
I could see this coming a mile away.