Tetris N-Blox

Tetris N-Blox (formely known as "Neave Tetris" and "N-Blox") is a spinoff game of Tetris that was created by Paul Neave. Since it was the first result when searching up "Tetris" at the time, Tetris Holding (the company that owns Tetris) took legal action against Neave in 2005. In an agreement between Neave and TH in 2009, it was sold to TH and is now considered an official Tetris game. It used to be on the Neave website, but was removed after the agreement, however it is still available on freetetris.org and n-blox.com.