RCT3 edit Campaign Scenarios - based on the guide from ĿIFE oƒ ƤIE on the platinum! version of RCT3
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=262638038

In Windows copy the scenario file (.dat) in your "documents" folder that you would
like to edit the settings of. Paste it into the "Start New Scenarios" folder.
In RCT3 open the scenario editor under Tools. With the save and load options on the
left options-panel open your scenario. Edit the settings you wanna change.
For example the ability to change the terrain. When finished, save the scenario and exit to Windows again.
Cut the edited scenario from the "Start New Scenarios" folder and place it into it's original place.
Maybe don't replace the old file, if you want to revert the changes you made.
For example some pre-placed water can be removed and never added back

Now play the Scenario!