Download Windows Steam games on macOS

Download Windows Steam games on macOS
So you already paid for a game like Rollercoaster Tycoon 2, which is playable on macOS when you use OpenRCT2 (it even has Metal support). However, Steam won't let you download it because it's Windows only. There's no "shut the hell up and let me download this shit anyway" button.

Getting started
Open the Steam client, and make sure you're logged in.

Open the Terminal.

Copy/paste/enter in Terminal:

Code:

mkdir ~/Steam && cd ~/Steam && curl -sqL "https://steamcdn-a.akamaihd.net/client/installer/steamcmd_osx.tar.gz" | tar zxvf -

Downloading game
Now you can download any Windows Steam game using a command. Fill in information about what game you would like to download by replacing the brackets.

Copy/paste, adjust information, enter:

Code:

mkdir -p ~/Steam/[Short name of the game]/ && cd ~/Steam && ./steamcmd +login [Your Steam username] +@sSteamCmdForcePlatformType windows +force_install_dir ~/Steam/[Short name of the game]/ +app_update [App ID of the game] +quit

Your Steam username
The username you login to Steam with.

Short name of the game
Use a short name of the game you would like to install. This can be anything you want, but just keep it short, and without spaces, special characters, emoji's, or stuff like that. So for example, use "rct2" for "RollerCoaster Tycoon 2: Triple Thrill Pack", "doom2" for "Doom II", "morrowind" for "The Elder Scrolls III: Morrowind", etc.

App ID
Search for the game you'd like to download at SteamDB. Just copy/paste the App ID displayed.

Finding your games' download directory
Open Finder and press Shift+Command+G.

Copy/paste/enter:
~/Steam

Press Control+Command+T to put the directory in favourites.

What other Windows games can I buy on Steam and play on macOS with an open source game engine?

Engine	For these games	Install
DevilutionX	Diablo and Hellfire.	brew install --cask devilutionx
GZDoom	DOOM, DOOM II, and Heretic.	brew install --cask gzdoom
ioquake3	Quake 3.	brew install --cask ioquake3
iortcw	Return to Castle Wolfenstein.	Download from GitHub
Julius	Caesar III.	Download from GitHub
JFDuke3D	Duke Nukem 3D.	Download from jonof.id.au
re3	GTA III and GTA Vice City.	Download from GitHub
Jazz² Resurrection	Jazz Jackrabbit 2.	http://deat.tk/jazz2/
OpenMW	Morrowind.	brew install --cask openmw
OpenRA	Tiberian Dawn and Red Alert.	brew install --cask openra
OpenRCT2	Rollercoaster Tycoon 2 (and the original).	brew install --cask openrct2
Quakespasm	Quake.	brew install --cask quakespasm
UTPatch	Unreal Tournament.	Download from GitHub
Yamagi	Quake II.	Download from yamagi.org