In newer updates of the package, developers added specific flags to emulate the true film look. Check your local man pages to see if your version supports native Japanese switching: man cmatrix Use code with caution.
[font.normal] family = "Noto Sans Mono CJK JP" style = "Regular" Use code with caution. Troubleshooting Common Issues
Even with the right software flags, your terminal emulator must be explicitly told to use the Japanese font you downloaded. For GNOME Terminal / XFCE Terminal / Mate Terminal Open your terminal. Go to -> Profiles -> Text . Check the box for Custom Font . Select Noto Sans Mono CJK JP Regular or VL Gothic . Relaunch your cmatrix or unimatrix -c japanese command. For Alacritty / Kitty (Performance-Focused Terminals)
/* Old logic */ if (bold == 0) matrix[j][i].val = ' ' + rand() % 94; cmatrix japanese font
-u 3 gives you Katakana. To include complex Kanji (Chinese characters used in Japanese), you need a custom character set. CMatrix doesn't do this natively, but you can pipe virtual input.
The "Japanese" look fails if your terminal font doesn't support Katakana. The classic choice for a pixelated, retro feel. M+ Fonts: Great open-source options like 0;4cc; M+ 1m .
If you followed the steps above and are still seeing boxes or nothing, use this checklist: In newer updates of the package, developers added
A highly customizable open-source Japanese font set that features crisp lines ideal for high-refresh terminal animations.
unimatrix --mode=japanese --color=green --frequency=0.1
Add the option to the man page:
But what if you want to take it a step further? What if you want to add a layer of aesthetic sophistication by displaying the code in Japanese characters—specifically Katakana, just like in the film?
: Your system must have Japanese character support installed (e.g., otf-ipafont or noto-cjk on Arch; fonts-takao-mincho on Ubuntu/Debian).
Once set up, you’ll see vertical streams of 漢字 (Kanji), ひらがな (Hiragana), and カタカナ (Katakana) tumbling down your screen. The visual density is striking — each column becomes a work of abstract typography. It’s a small change that turns a retro hacker trope into something distinctly beautiful. Troubleshooting Common Issues Even with the right software
You can make the Japanese rain your own by adjusting the parameters:
Actually, the standard cmatrix does not handle multi-byte fonts (like Kanji) natively. It will crash or display question marks.