Despite existing back in the Windows XP era, many people who downloaded CursorMania were people who watched a video called "Windows 7 Destruction by Joel of Vinesauce", where he downloads CursorMania. CursorMania gives the user a trojan and usually makes the Cursor invisible and slows down the computer.
It infects Internet Explorer, Chrome, Firefox and Opera.
According to BitDefender, it is a trojan toolbar.
It can be removed with antivirus software.