What is X?

Did you ask yourself «what is x?»
«X» is familiar.
«X» is unfamiliar.

Everyone knows the classics like Tetris. Simple gameplay but defying.
«X» is kinda similar. «kinda».
Three «X» of the same color have to be in a row. In a diagonal row. These blocks disappear.
Also all double-combos connected to them.
And all double-combos connected to them.
And all double-combos connected to them.
And all d… ok, you get it!

You can build huge chains and get lots of points. Yeah! Awesome!

So do not lose track of the game and think diagonal!