It even had an English dub.
And a few little details, like the colouring reflecting the comic (a lot of solid reds and blues for backgrounds) or that Luke's shadow was a fraction of a second slower than him every time Luke shot.
They also made the Daltons dumber in the cartoon. In the comics they were excellent shots and were literate. In the cartoon Joe couldn't hit a target point blank and their illiteracy was used for a few jokes.Also the Polish dub was super cheesy with the voices often repeating which made it even more ridiculous and thus funny.
I found it interesting that you could put the show pretty well within a real time frame: the plot did not move beyond June 1876, as General Custer was around as a recurring character, but the battle of Little Bighorn was referenced at least twice (in the same dark humour way Brutus is always shown playing with a knife around Julius Ceasar in Asterix).