"An exception has occured, but exception handling has been disabled in this build. If you are the developer of this content, enable exceptions in your project's WebGL player settings to be able to catch the exception or see the stack trace." Three times mid game for apparently no reason...
 "Antimatter Dimensions"){kind=icon}
 "Tiny Tappers"){kind=icon}
 "The Perfect Tower"){kind=icon}
 "Flight"){kind=icon}
It is possible. That column is disabled in challenges.