'Lazy Tetris' is a free-to-play Tetris game that allows you to do anything, even redoing and lifting tetriminos

Research has
Lazy Tetris
https://lazytetris.com/
You can get a good idea of what 'Lazy Tetris' is like by playing the video below.
Gravity-free & stress-free Tetris 'Lazy Tetris' - YouTube
Lazy Tetris allows you to move and rotate the tetriminos with the arrow keys, and also supports mouse operation. You can place the tetriminos however you like by dragging them up, down, left, right, and clicking to rotate them.

There is no gravity, so the tetriminos float in the air forever, so when you want to place a tetrimino, you drop it by pressing the space bar or the 'DROP' button.

You can keep the tetriminos by pressing the Enter key or clicking 'HOLD' surrounded by a red frame.

You can also redo a tetrimino drop by using the delete key or the 'UNDO' button.

Even if the columns are aligned, they will not disappear automatically. If you feel that the columns are becoming too small, click the 'CLEAR' button.
When you do, the tetriminos that are lined up in a horizontal row will disappear, allowing you to enjoy stacking as many as you like.

The developer of Lazy Tetris commented on the social news site Hacker News, 'I made a Tetris variant that takes all the stress out of it and lets me focus on what I love most: stacking. There's no timer, no score, no gravity. When you're ready, move on to the next piece and clear the line whenever you want.'
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