My parents forced me to take typing lessons on typewriters in the 90s and I am thankful they did, of course that had some technical limitations in regard to speed but it definitely made me a great blind typist which is the main foundation for typing fast in my opinion.

Some years later in school I also had a typing class at some point and the teachers thought I cheated because of my high scores so I had to take the test again with multiple teachers hovering over my shoulder – I scored slightly higher then.

I'm usually around 120wpm, which I know is not even a great score amongst typist but it's more than enough for me. I couldn't play the game due to an injury right now unfortunately, but I did click through it and agree with others that I prefer practising words or sentences - plus the letters appearing on different spots on the screen is annoying to me because that's not how I type, so I'm not sure if this is really great for typing practice (for me, at least) – but it could be good at becoming faster at blind typing maybe?