JWildfire

really awesome program, you can easily create unique designs in minutes and lots of parameters if you want more control over your design. I only wish the GPU rendering was on par with CPU rendering in terms of options. Also it would be nice if there was more export options for batch rendering, I like to keep my animation renders in image sequences and unfortunately the batch renderer automatically converts to .mp4 so in order to keep my image sequence I have to monitor the progress and cancel the render when it gets to the encoding stage.

Doesn't work under Proton properly. Does not use GPU even when enabled. Typeface looks jagged. The Steam page claims "visually appealing graphical user interface", which is absolutely false. The user interface is a cluttered mess that has obviously never been reviewed by a single designer. If you want professional flame software, rather buy Chaotica, which works perfectly out the box and looks good - and it's years old now.