Yah most ports are. Also i believe its always said so in the descreption. Or at least it was when i bought it on google play. Maybe it just wasnt clear in other languages but i think most players just saw the high rating and assumed it was an official port without reading the description of the game.
I do not read the explanation of appstore and I missed the game title logo.
I found OHOL on Youtube or Twitter. Json and OHOL pc were not interest.
Youtube hits higher than official even if I google.
So, I am not pay attention to the history of OHOL.
Therefore, when a third party introduces OHOL, you should command forcely “OHOL mobile is an unadaptive game”.