Paint Falls
Made with:
Inkscape (Shapes and coloring)
Krita (Noon and Cosmos backgrounds)
Gimp (Textures and final touches)
Inspirations:
Super Mario World - Underwater background
New Super Mario Bros U - Sparkling Waters background
(some) Super Mario 3D World Landscapes
Splash
Made with:
Inkscape
Inspirations:
Super Mario World - Underground background
Previous Plasma Wallpapers
Full-size versions and source files: Proton Drive
I also draw pixel art sometimes 
: Exploding Joysticks (@ExplodingJoysticks@mastodon.social) - Mastodon