The program is called 'Large Address Aware' you can download the. Figured out the issue - the user library is hidden by default in OS 10.8. So I searched on google and I found a handy piece of software that allows you to make any program use your full amount of RAM. you just have to find where it's installed, which should be wherever you told steam to install it, I'm guessing this is Steam\SteamApps\common.
For example I have 4GB of ram and it used to only use 1 GB ram. Known bug, sometimes it may crash even if you have a high-end computer! This is because RCT3 was ONLY made to handle 1 GB of RAM. It is available on Nintendo Switch, Microsoft Windows, and Macintosh operating systems. It is developed by Frontier Developments plc and Aspyr.
If it does not crash and allows you to place it, the test is complete! Download Link: RollerCoaster Tycoon 3: Complete Edition is a Simulation game with a single-player mode. Your game MAY crash, if it does immediately delete what you downloaded as your computer was not able to handle the file, it could of taken up to much memory RAM. NOTE: Sometimes the scenery could be in Walls, fences or even the trees, so be sure to search in them categories too!If you find what you were looking for try placing it. Restart/run Roller Coaster Tycoon 3 and go to sandbox mode, then try looking through all the scenery types/genres and try to find what you were looking for.