Falling Blocks on an Arduino Nano with 4x 8x8 dot Matrix

Falling Blocks is great! I used to play it at the pub back in the day. Yea, its old. I know. But what the heck? This project took me one week from start to finish - and I only worked on it a few hours each day. Things went fairly well. No major complications ... just : code, debug, test, fix and repeat until I was done.