[Cesar82]

Insert something like this in CurStepChanged.

Originally Posted by abror

do you know how to open the application/website after the installation is complete and the user has clicked Finish without the checkbox

procedure CurStepChanged(CurStep: TSetupStep);
var
  ResultCode: Integer;
begin
  if CurStep = ssDone then
  begin
    ShellExec('open', 'https://www.fileforums.com', '', '', SW_SHOWNORMAL, ewNoWait, ResultCode);
    ShellExec('open', ExpandConstant('{app}\game.exe'), '', '', SW_SHOWNORMAL, ewNoWait, ResultCode);
  end;
end;