This is one of my earliest and most watched tutorial video measured by watch time, having 100k+ views at the moment (2020). It’s a serendipitous start of my instructional design journey. Spoken Chinese with English captions.
In modern tetris, there is a type of counter-intuitive technique called a “twist.” It’s often confusing to newcomers, unless they understand the underlying game mechanics. Many viewers (on YouTube and elsewhere) told me they finally “got it” after watching my video, which I found very satisfying.