Usually, yes. Save files are often stored in different directory structures depending on the launcher. You may need to manually move and rename your save files to transfer progress.
Console versions use the native PSN or Xbox Live infrastructure.
This is a popular community tool used to emulate Steam/Uplay APIs locally, allowing games to launch without calling the official servers. how to play rayman legends without uplay
If your goal is simply to play the game without dealing with PC launchers, Rayman Legends is available on several platforms that have zero Ubisoft Connect requirements:
You can use GOG Galaxy if you want achievements, but it is never mandatory. Usually, yes
Be extremely careful when downloading modified executables from the internet. Always scan files for malware and ensure you are not violating terms of service. ❓ Frequently Asked Questions
Are you having a with Uplay (like a "connection lost" message)? Console versions use the native PSN or Xbox
Only for the initial activation and the "Daily Challenges." The core game and local co-op can be played entirely offline once installed.