I find it a bit offensive how this looks like a clone/ripoff of Luxor, without any credit given

[craig234]

Then on top of that it adds issues like being unfinished?

[Kotan]

It's great that you remember the first game that created this genre!
At the moment it is part of a family of match 3 games, you can find many projects with similar gameplay. Once there were so many of them that they ceased to be clones and became a separate subgenre, but each game has its own characteristics.