Entropy

Entropy is a memory game. Rules: 1. you will see random bits 2. you need to remember it, click on the board when you are ready 3. then board is cleared and you need to reconstruct the matrix NOTE: It is work-in progress version. TODO: 1. show time 2. count score 3. display congrats when puzzle solved 4. more options and levels 5. make it look better, add sounds 6. store/sync passed levels