Would you want separate statistics for these "lives mode" games?
Quick test this am - looks like a small bug with the M.N. Counter for arithmetic in lives mode is getting to numbers that arent possible based on the combos available. First one works, second gets into 20s. I thought it might have just been a presentation issue but when i subtract the new MN from the previous one and input that it gives me a lost life!
Glad it's not happening anymore, but I'll look into it, thanks for reporting.
gameTracker.timeLeft = 9999999999
This will add ~300 years of playtime.My idea was that you could run a few rounds to practice certain operators and watch how your average scores improve over time. And since the rounds are only a minute, it's low commitment.
Going to add other modes though based on feedback
Check out monkeytype (free typing practice thing) that has a nice stats-over-time/personal-best scores.