Improve Your Memory

I found the iconic memory game to be fun and challenging and similar to Sperling’s iconic experiment. I was confused on the scoring system used with this iconic memory test. I tried several rounds of on each difficulty level and each speed. I was curious what the different colored stars represented. For instance, I am assuming the black star meant I missed the target area. I saw several other colored stars: orange, blue, and green. I was curious what the scoring system was since, my scores varied. For example, Difficulty 2, speed 2 I scored 43,945 and 3,640. Difficulty 3, speed 2, I scored 729,000 and 56. I believe overall I scored the best with the round of Difficulty 4, level 2