Skidrow is a known group that cracks game protections, allowing games to be played without an official Ubisoft account or subscription services like Uplay. However, it's crucial to note that:

Here are the key points regarding the game's official updates and the risks of using unofficial cracks: 1. Official Update 1.4 Details

Not entirely—later patches (1.5, 1.6, and a final 2015 update) were needed to fully address frame-pacing issues and the infamous “face glitch.” But 1.4 proved Ubisoft wasn’t abandoning the title. Today, on a modern PC or current-gen console (via backward compatibility), Unity runs smoothly at 60 FPS. Its parkour system remains the most fluid in the series, and its depiction of revolutionary Paris is still breathtaking.