Editing the EXE file.

Recently, I had an idea and decided to explore the Heroes executable using OllyDbg.v2.01 to see if it's possible to change the game resolution (which is always 1024x768) to something else. I couldn't find the necessary values by simply editing the file with a hex editor. However, I discovered that it is possible if you change the display mode of the dump window to (32-bit float) and search for the value of interest in (Floating-point number): Original - Modification - OllyDbg - The EXE file - .
And now I'm sitting here thinking, what if it's possible to edit the stats or variables of formulas for calculating buffs/debuffs in the EXE file using a similar method? Or maybe all of this is already well-known.