It seems you have the RCT1 scenarios twice, then:
1. The screenshot shows recreations (made for people who don’t own RCT1)
2. You bought RCT1 on Steam.
Using a real RCT1 is always better, because it gives you much more than just scenarios. You will need to link RCT1. You can do that as follows:
Open the Options window (see the top right of the title screen)
Go to the “Advanced” tab (the one with the spanner)
At the bottom, there is an option to set the RCT1 path. Click it.
Now navigate to the path where Steam put the RCT1 files. By default, this is
How do I extract RCT1 files to OpenRCT2?
in Problems, Bugs and Feedback
Posted
Will you explain how to do this same thing on mac? thanks! I am going to download the GOG version of RC1