The game is programmed to always use a 5:4 aspect ratio regardless of your set resolution.

I was hoping Frontier would fix this bug in the RCT3Complete re-release, but they haven't. I have therefore decided to fix it myself instead.

You only need a Hex editor, I recommend HxD (you don’t even have to install it), but any hex editor will do just fine: https://mh-nexus.de/en/downloads.php

This guide is for the Windows version of RCT3 Platinum from Steam, and RCT3 Complete from Steam or Epic Games Store only, other versions will NOT work!!!

I can't post this guide on the Complete Edition version without buying it on Steam which I will not do without a sale.

Select RollerCoaster 3: Platinum! or RollerCoaster 3: Complete Edition In your Steam library, press the little gear on the top-right and choose Properties…. Select the Local Files tab and choose Browse Local Files….

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Find RCT3plus.exe (for Platinum) or RCT3.exe (for Complete Edition) in the directory that opens (you might only see RCT3plus or RCT3 if you have file extensions hidden) and open it in your hex editor of choice.

You may wish to create a copy of your original executable to revert the changes in case you wish to quickly undo this patch without using the Verify Integrity of Game Files... option in Steam.

First determine your aspect ratio based on the following table. If your resolution is missing, please contact me in the comments at the bottom.


The aspect ratios above are the rounded decimal representation of the closest available value for the true aspect ratio calculated by dividing the pixel width by the pixel height of the resolution.

Now go to offset 8D7CCC (Platinum) or A5493C (Complete Edition) in the file, you can use Search>Go To… in HxD:


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You can now see the current aspect ratio right next to the cursor in the area marked on the screenshot below.

DO NOT CONTINUE if this is not 00 00 A0 3F (1.25), you are changing the wrong value! The only exception is if you already changed the value earlier.

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Now change the value to the aspect ratio chosen above, either by typing the hex value in the left section, or the decimal value in the right section.

If you were to save and play the game now, you might notice that the vertical FOV of the Coaster Camera has changed. You need to change another value to fix that.

First determine your horizontal FOV based on the following table. As before, if your resolution is missing, please contact me in the comments at the bottom.


You may choose a different FOV based on your preference. The adjusted horizontal FOV was calculated by preserving the original vertical FOV using the Python code below:


Now go to offset 118235 (Platinum) or 4E1456 (Complete Edition) in the file, you can use Search>Go To… in HxD:


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You can now see the current coaster camera FOV right next to the cursor in the area marked on the screenshot below.

DO NOT CONTINUE if this is not DB 0F C9 3F (1.57079637050629), you are changing the wrong value! The only exception is if you already changed the value earlier.

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Now change the value to the FOV chosen above, either by typing the hex value in the left section, or the decimal value in the right section.

The above should be sufficient for most people.

If you wish to tinker with the FOVs of other cameras, you can find the list of all FOV locations I could find in this table (use column Plat for Platinum, CE for Complete Edition):


Use the table in section 3 for adjusted FOVs where the default is 90deg.

Use the following tables for adjusted FOVs where the default is 72deg, 45deg, or 11.25deg:

The DartCam zoomed out value is shared with pathfinding and physics collision code, so you can't safely modify it directly. Instead you must tell the game to look at an unused part of memory and put the new FOV there. You can use the same approach to modify the zoomed in FOV and zoom speed independently. I would recommend setting the zoom speed much higher, since the default animation is excruciatingly slow by modern standards.

The sequence CC CC CC CC is often used as padding and can be safely modified, but make sure to use a 4-byte aligned location. Use the following table for a valid configuration. To use it, change the hex value at each Address Offset from Old Address to New Address, and replace CC CC CC CC with your new FOV at offset FOV Offset.

Make sure the zoomed out FOV is larger than zoomed in FOV, or the zoom animation will never finish!

Platinum edition:

Complete Edition:

Now save the file and run the game. The Coaster Camera view should now have the proper size!

If you messed something up and the game crashes instead, you can restore the original file using Verify Integrity of Game Files… on the Local Files tab of the game settings in Steam.