I once built a Tetris-like game prototype where you needed to form algebraic equations to clear objects, the more complex your equation the more points you got

I once built a Tetris-like game prototype where you needed to form algebraic equations to clear objects, the more complex your equation the more points you got [1]. Reminds me a bit of this. 1: https://www.youtube.com/watch?v=Cux8jobEbEs https://www.youtube.com/watch?v=Cux8jobEbEs