A great victory for Hinduism occurred when the Syrians, Palymyrians and Greeks in the Middle East were brought into the Hindu fold. The birthplace of Christianity from Alexandria to Antioch now praised Shakti. Islam's headway into Persia was reversed when the Nepalese and Persian forces united for the first (and only time) in 800 years of Persio-Nepali feuding to repulse the Nepalese Caliphate from Mesopotamia; the Chola dynasty planned on reconquering Nepalese Arabia and converting the peninsula back to Hinduism to bring security to the Mediterranean-Indian ocean supply line. The Zoroastrians have also been losing some land to Chalcedons and Tengri barbians to the north, whilst all of Persian Anatolia was lost to a resurgent Greek Empire (the Greeks in turn losing their Levantine holdings to the Hindus). The far eastern Buddhists are still strong, the Japanese have adopted Shintoism and one of the southeastern island states worships Mesoamerican gods for some reason.
Most notably the only things unchanged are that the Druids of the British Isles have outlasted their real life counterparts by hundreds of years now and the Norse faith is in comfortable standing after the one nation of Scandinavia was formed by the Danes.
Light green = Nepalese Empire direct control, dark green = vassal states, muted green = colonial nation of Nile
Red = Hostile states
Yellow = Neutral states
Blue = Allies (Roman Empire and Han Empire)
The Mongols (pink) are still strong and have defeated the Huns, the Parthians (tan) were wounded greatly by the loss of much land to the Greeks (beige) and the independence of the Alans (light green in Georgia) to the north, the Scandinavians (blue) united, the Romans (red) are resurgent and the Catonese state of Zhou (white, southern China) has returned once more after the Han (yellow) warred with the Japanese (red) to kick them out of Korea (split between two Korean Kingdoms, East and West Korea). The Nepalese are also soon to extend their colonial nation of Nile to cover one end of Africa to the next! The prime goal is to reconquer the Caliphate, who were formerly a Nepalese colony which converted to Islam. Then once they're subjugated I'll bring them back as the Nepalese Merchant Caliphate of Hindu Arabia.
I think other than one or two more provinces, I'll stop gouging land out of the Parthians - weakening them has allowed the Christians to make major headway going East. I wonder if I can get the other pagans in Europe (druid England and Norse Scandinavia) to either convert to Hinduism or start carving land out of the Chalcedons.
I also took over the Rock of Gibraltar, allowing me to import Western ideas from the Germans in Spain. Westernization whilst overextended and at war under a Chola Emperor with a weak claim produced a mass revolt of hundreds of thousands of rebels all across the Empire.
Including one particular nasty case where 100,000 rebels attacked the Greeks at Corfu. The Greeks were not prepared.
These were happy times, but the population of India did decrease somewhat drastically.