Hmm… I just tried it out in gnome-terminal, Eterm, xterm, vte, but I was not able to see anything with the example from the Wikipedia-page.
Unfortunately, nothing showed me the “Hi” image. Could you maybe point me into the right direction?
As the Wikipedia article says, the Sixel system was introduced in DEC’s VT300-series terminals, but for whatever reason, not present in later terminals like the VT400-series or VT500-series.
By default, xterm emulates a VT420, so it doesn’t allow sixel graphics. If you launch xterm with xterm -ti vt340 (and your xterm was compiled with the sixel feature enabled), the Wikipedia example should work. It works for me, using xterm 351 on Debian Testing.
The libsixel README suggests that the most common terminals supporting sixel graphics are xterm, mlterm, Mintty (on Windows), and iTerm2 (on macOS).
Okay, xterm -ti vt340 worked. Now I can start developing! 
These look exactly like the original graphics. But they are not??
Albeit being rendered in an xterm, they are THE original images from the Amiga version.
So. Release 0.22 is out! This one can load games directly from the Magnetic Scrolls Collection. It also introduces the “sixel” mode, which Dave suggested. Thank you for that! Just look at how beautiful it is!
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My suggestion for Sixel graphics was just an off-the cuff thing. I didn’t think it would look so good. Therefore I’m seriously considering it as an option for Frotz’s curses interface. See https://gitlab.com/DavidGriffith/frotz/issues/193
Offhand, I’m unaware of any game besides dMagnetic that uses Sixel graphics.
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Please do so. Let me know if you need ANY help with that.
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Hey guys!
So, with Ubuntu 20.04 (Focal Fossa) being released, it is now easier than ever to install dMagnetic on your computer.
Just type
sudo apt-get install dmagnetic
Tell your friends!
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Whoa, nice! What kind of little monitor is that, Dettus? Well done!
https://www.raspberrypi.org/products/raspberry-pi-touch-display/ it is this one.
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I wonder how sixel output looks on that…
Not good… 
dMagnetic 0.23 is out!
As you can see from the pictures I attached to this post, the new vmode low_ansi2 is producing much more colourful pictures when playing the games from the original MS DOS binaries. It took me a while to figure out a good way how do it, but I think I got it! 
Yes, Sixels still work
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Hello!
Today, dMagnetic saw its release 0.24. http://www.dettus.net/dMagnetic It can load the Commodore 64 binaries of the original games now. I just LOOOVE the graphics there.
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