• Wallpaper Engine for KDE[github.com] (Requires a purchased copy of Wallpaper Engine)
  
• Sweet KDE (Global Theme)[store.kde.org]
  
• Candy Icons (Icon Pack)[store.kde.org]
  
• macOS Big Sur (Cursor Pack)[store.kde.org]
  
• Latte Dock (macOS-style dock)[store.kde.org] (I usually just install this with my package manager)
  
• Plasma Splash Arch Moe (Splash Screen)[store.kde.org]
  
• Lollypop (Music Player)[wiki.gnome.org]
  
• CAVA (Terminal-based Audio Visualizer)[github.com]
  
• cool-retro-term (Retro Terminal Emulator)[github.com]
  
• Konsole (KDE's Terminal Emulator)[konsole.kde.org]

These wallpapers are intended to be used with the "Sweet KDE" theme for KDE Plasma, the "Candy Icons" icon pack, the "macOS Big Sur" cursor pack, and Latte Dock (configured to be extremely transparent and blurry). All of these can be obtained through the "Discover" application in KDE. However, be careful when installing "Sweet KDE", as it is offered as individual components as well. To ensure you have installed everything, only search for it after selecting "Plasma Addons" > "Global Themes". See the "Quick Links" section for more information.

Note: I have only included wallpapers that I have personally tested and know for a fact will work with the current set of tools that the "Wallpaper Engine for Kde" plugin supports. So, if anything funky is happening with a wallpaper, it's probably your setup.

In order to use the wallpapers in this collection in Plasma, you must first build and install the plugin on your system. You can find the plugin repository under "catsout/wallpaper-engine-kde-plugin" at GitHub. The instructions are really simple. You may also need to install the plugin through the KDE wallpaper options for it to be visible. Then, you need to switch the selected wallpaper type to "Wallpaper Engine for Kde", select your Steam library, choose a wallpaper, and press "Apply". If you aren't sure where I'm talking about, just right-click the desktop and click "Configure Desktop and Wallpaper...", you'll figure it out. Plasma customization is pretty intuitive. You can even use the plugin for your lock screen. See the "Quick Links" section for a link directly to the GitHub repository.

Note: you will most likely need to build and install the plugin even if you install it through the Plasma addon installer because it needs some engine components that will not exist if you do not build it.

Check out perigoso's project "plasma-splash-arch-moe". It's a fantastic splash screen to go along with everything. You can find a fork of the project with SVGs, a version with a darker background, and a Fedora version (based on the darker version) under the "Insights" > "Network" section of the GitHub repository (which you can find a link to on the KDE store page). See the "Quick Links" section for a link to the KDE store page for perigoso's project, which you can also find through the Plasma addon installer.

The music player you see in the attached image is called "Lollypop". The audio visualizer that you see in the terminal emulator is called "CAVA". The terminal emulator is "cool-retro-term". I also have an instance of "Konsole" running. Again, check out the "Quick Links" section.