How does one update their version of the game, Do you simply download the lasted version on this page and overwrite the folder the games' files are stored in? Because I'd like to retain the progress I've made so far, but I'd also like to update the game.
the memory and saves for the game are listed else where on your pc, but for safety do this
have old game folder, and new one in the same location(inside a sub folder if you want)
rename the new zip folder to something to stop overwriting (In Heat New for example) when extracting click the "extra to |folder name|" instead of "extra here". (better with 7zip imo)
open the new game in the "In heat new" folder you just extracted, see if all is good, delete the old folder.