Apple's Game Porting ToolKit can be a bit tricky to install onto macOS. Now there's a third-party installer that makes the process much simpler.

How to Install Third-Party Game Launchers on Steam Deck The NonSteamLaunchers installer makes it easy to put Epic Games, Ubisoft Connect, GOG Galaxy, and more on your Valve handheld.

Looking for how you can install multiple instances/copies of a game in Steam on PC? Follow the step-by-step instructions in this post.

Less MSI or lessmsi is a free portable tool that lets you view & extract the contents of an MSI installer package from command-line as well as GUI.