Actually the people who made Roller Coaster Tycoon were bought out and canned by EA. Planet Coaster is what you want. its made by all the same developers that made Roller Coaster Tycoon and its amazing. Soon they're going to add the rest of the features that were in the other Roller coaster Tycoon games like water parks and junk. Try it out, its amazing.

worst game ever. I've seen better stock market games within other sim-games or even GTA5