It's fun, but I play on phone so Z X confuzes me, especially on "enter data" minigame. Also chaotic input modifier on this minigame makes it almost impossible for me.
But what's even worse is "check twice" modifier. When it gets to normal, your cusor gets not on the position of your current symbol but its index... Like me elaborate. Lest take ' sybol before the letter as a cursor. If current task is, for example, XX>'>ZZ<<, then when it gets to normal then it will be X>Z'< and you are fine... But if we are currently on something like XX>>ZZ'<<, then on normal it will be X>Z< ... there is no cursor, no white letter, because cursor was on position 7/8, but now it's on 7/4. And whataverbutton you click you'll get fail. Probably become symbol on position 7/4 is Null and you have no Null button.
Would be great if there was an option to change hints beetween Z/X or O/X