Hex Editing a Problem

Today I tried to play the old PC game Turok 2: Seeds of Evil which I used to have on Nintendo 64 but had never played the PC ported version. I shortly found that the only available resolutions for the game are in 4:3 with no option for any 16:9 resolutions such as my own monitor's default resolution 1920x1080.

I didn't really enjoy looking at the smudgy imagery that 4:3 resolutions provided on my screen, so I searched the internet for a solution to the problem. I found that with use of a Hex Editor I can edit one of the game files and replace the values for 800x600 for example with ones for 1920x1080. 

I opened up a Hex Editor which I already had on my computer for a number of years (known as HxD) but hadn't had many opportunities to use. I replaced said values then opened up the game and set the resolution to 800x600 in the settings to trick it into using 1920x1080. Which worked!