The steam_emu.ini file is a configuration file used by the Steam emulator, also known as Steam Emulator or SteamEmu. This emulator allows users to run Steam games without having a legitimate Steam account or without the need for the Steam client to be running. The configuration file contains various settings that can be adjusted to customize the emulator's behavior.
: Make your changes in Notepad, then go to File > Save . steam_emu.ini
(Save game / profile)