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Here's a quick overview of how to run Hero Designer on a Chromebook. My testing was done on an Asus C434 running Chrome OS 78. I personally ran into a number of issues with Java on Debian Stretch that took my some time to track down so I figured I would share this with others. The magic ingredient for smooth running Hero Designer on Stretch was to pass in -Dsun.java2d.opengl=true as a command line argument... after that all the slowness, artifacting, and UI flickering went away. Assumptions Minimal proficiency with Linux and the the command line Linux (Beta) enabled under Settings Debian Buster installed under Crostini (this is the default Linux distro installed, assume this is the case unless you know you installed another distro) Get Hero Designer Get yourself a copy of Hero Designer from the store and put the zip into your home directory. Make a directory to put the unzipped Hero Designer files into: mkdir ~/Hero\ Designer Unzip your Hero Designer into the directory you just created: unzip ~/HeroDesigner.zip -d ~/Hero\ Designer/ Install Java Update your packages: sudo apt update Install Oracle Java: sudo apt install openjdk-15-jdk Verify your version of Java: java -version You should see something like the following: java version "13.0.1" 2019-10-15 Java(TM) SE Runtime Environment (build 13.0.1+9) Java HotSpot(TM) 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing) Create an Application Launcher Start by creating a .desktop file for Hero Designer: sudo touch /usr/share/applications/hero-designer.desktop Make the launcher executable: sudo chmod +x /usr/share/applications/hero-designer.desktop Cut and paste the following text into the desktop launcher file you just created: [Desktop Entry] Name=Hero Designer Comment=Create characters for the HERO System GenericName=Hero Designer Path=/home/YOUR_USERNAME/Hero\ Designer Exec=sommelier -X --scale=0.8 java -Xms32m -Xmx64m -Dsun.java2d.opengl=true -jar HD6.jar Terminal=false Type=Application Icon=/home/YOUR_USERNAME/Hero\ Designer/hdlogo.png Categories=Utility; Please note that you MUST replace the YOUR_USERNAME text with your actual username... very important! That's it, after the desktop launcher has been created you should be able to launch it like you would any other app.