RCU is a cursor format exclusive to RealWorld Cursor Editor and using this software it is possible to export the cursors to some of the more common formats like *.cur or *.ani. No other program can work with *.rcu files.
Convert RealWorld Cursor Editor cursor file to Animated cursor.
We found one software available in the database for this conversion.
Microsoft Windows software - convert rcu to ani on Windows
A cursor creator for Microsoft Windows
Convert from rcu file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.