How to Play Dungeon Defenders on Linux.
Contents
Dungeon Defenders is a hybrid multiplayer video game developed by Trendy Entertainment. The game has been released on Microsoft Windows, Xbox, iOS, Mac OS, Linux, etc. Here is how to play the game on Linux.
Getting Dungeon Defenders to work on Linux
Dungeon Defenders is a native Linux game, but the native version of the game is crashing. So those looking to play Dungeon Defenders should use Proton.

To make use of Proton for Dungeon Defenders, you must install the Linux version of Steam. You can make the Steam app work on Linux through the official version of Linux.
Install Steam
Installing Steam on Linux requires the terminal. To open a terminal, press Ctrl + Alt + T on the keyboard. Or search for “Terminal” in the application menu and launch it that way.

ubuntu
Installing Steam on Ubuntu is very easy as it is included in the official sources of the software. To get it working, enter the apt install command below.
sudo apt install steam

Debian
If you want to use Steam on Debian, you’ll need to download Valve’s official DEB package. To download the package, use the following wget download command below.
wget https://steamcdn-a.akamaihd.net/client/installer/steam.deb

When the package file is downloaded to your computer, the installation can begin. Using the dpkg command below, install the latest version of Steam.
sudo dpkg -i steam.deb
After setting up the Steam DEB package on your computer, you will need to fix any dependency errors that may have occurred during installation.

sudo apt-get install -f
ArchLinux
Steam is available on Arch Linux through the “multilib” software repository. In order for it to work on your computer, you will first need to enable the repository.
To enable the “multilib” software repository on your computer, open the /etc/pacman.conf file with your favorite text editor (as root). Once open, search for “multilib” and remove the # symbol in front of it, as well as the lines below it.

After editing, save your edits and close the editor. Then use the pacman -Syy command to resync Arch with the official software repositories.
sudo pacman -Syy
Finally, install the Steam app.
sudo pacman -S steam

Fedora/OpenSUSE
Steam runs on both Fedora and OpenSUSE using software repositories included with the operating system. However, Steam works best with Flatpak on these operating systems, so we suggest using the Flatpak version instead.
flat pack
To get Flatpak to work on Linux, you’ll install the Flatpak runtime and set up the Flathub app store. Getting the Flatpak runtime is relatively easy. To do so, follow our guide on the subject.
After configuring the runtime, you’ll be able to get the Flathub app store to work. Using the flatpak remote-add command below, configure Flathub.

flatpak remote-add –if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Finally, set up the Steam app using the flatpak install command below.
flatpak install flathub com.valvesoftware.Steam
Install Dungeon Defenders on Linux
With Steam installed, open the app on your computer and sign in with your user credentials. Then follow the step-by-step instructions below to get Dungeon Defenders working on Linux.
Step 1: Find the “Steam” button in Steam and click on it with your mouse. Then select the “Settings” button within the menu to open the Steam settings area.
Within the Steam menu, find the “Steam” playback section and select it. Then select the checkbox “Enable Steam Play for supported titles” and “Enable Steam Play for all other titles”.
Step 2: After selecting the checkboxes, find the “Store” button inside Steam and load the Steam store. Once inside the Steam store, locate the search box.
After clicking on the search box, type “Dungeon Defenders” and hit the Enter key on your keyboard. Then, look at the search results and locate “Dungeon Defenders.”

Step 3 – Click on “Dungeon Defenders” in the Steam search results. Then look for the “add to cart” button to add the game to your Steam shopping cart. Then buy the game using the Steam app.
Step 4: Once you have purchased Dungeon Defenders, find the “Library” button within Steam and click on it. Then, find “Dungeon Defenders” in your game list and right click on it.
In the right-click menu, select “Properties” with your mouse to open the game properties. Then click. “Force the use of a specific Steam Play compatibility tool.”
Select the latest version of Proton. Dungeon Defenders doesn’t run well natively on Linux, so this step is crucial.

Step 5: Look for the blue “INSTALL” button on the Dungeon Defenders game page and click on it to install the game on your Linux PC. The installation will take some time.
When the Dungeon Defenders installation is complete, the blue “INSTALL” button will turn into a green “PLAY” button. Select this button to start the game.