press up to interact, also HD mod doesnt exist, you got a lil confused there bud, its just a zip file with pictures, u probably shouldve just looked at whats inside of it. + its only the exe. file, stuff doesnt get saved anywhere.
You cant do this in the base game, I dont know why ur asking this, its never stated anywhere that you can. You can mod the game tho, but you have to download the project file and godot. More instructions are on the modding section
