"This game is a bit like Tetris, but rather more like SEGA's ""Columns"" game. The idea is that stacks of three ""gems"" drop from the top of the board. You can move them left or right as they fall and rotate the individual gems in the stack too. When the gems hit the bottom of the board (or land on top of other gems) then if any line of 3 or more identical gems is formed, these gems are removed from the board and any gaps formed by this cause other gems to ""fall"" into them and may cause additional lines to disappear, etc.
Occasionally a weird looking stack will appear (the so-called ""magic gems""), when these turn up, whatever gem they touch will be removed along with *all other gems the same colour*.
The game is over if a stack cannot be fit completely on to the board (even if it's a magic gem, the gem removal is test is performed after the gem has ""landed"" successfully)."
Jinwoo Park currently has 689 views spread across 12 videos for Tetris. His channel currently has around 3 hours worth of content for Tetris, less than 0.49% of the total video content that Jinwoo Park has uploaded to YouTube.
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