Type in 1 letter at a time. After the first digit add a "." as the decimal. See how many you can get correct..!
This is a super simple test of how many letters of pi you know. I should also note that if you get to 300, it should stop your game. (The only reason that should happen is if you either cheat ⊃:Σ . or if you studied pi for all your life.) It's all made by me.