And also, I think it would be good to change the "Sudden Dead OFF", for stop to falling blocks before the diagonal.
I think it might be a good idea to add a field reduction option with "Match Time Limit Unlimited", with a chosen time, and so also with a "Match Time Limited" (Sudden Death and Reduction)
Example:
Match Time Limit : Unlimited - 1:00 > 9:30
Sudden Death : On - Off (reduction) - Random
Sudden Death Time : Auto - 0:30 > 9:00