Beyond the sciences, and once again, this is just a sample of all that happened during this period. You have the significant Hindu epics, the Mahabharata, the Ramayana, the Puranas, get written down and formalized. You could say they were canonized. The game of chess, or the early version of the game of chess was invented, called chaturanga. They had horsemen, which were the knights. They had infantry, which were the pawns. They had elephants, which eventually turned into bishops.