I like this concept and the high amount of customization. Maybe the TF visuals could also include the player’s hands? I feel that is a big draw from the game’s thumbnail. The text can be hard to read as there’s not a lot of color contrast between the font and background. I would also try adding some sound effects, especially for typos or game overs. I’m glad you’re also trying to accommodate multiple keyboard layouts, hoping there is a solution that lets you get whichever char the key press corresponds to, directly.