Among all the projects I did in VBA, this is neither the most complex nor the most graphical, but it is the only one that is not submitted to Non-Disclosure-Agreement.
This a Casino Automate for roulette predictions : it adds/remove numbers, create graphs and store/update data, everything is automated, no sheet modification is required.
Unfortunately, statistics are not enough to win the game (mainly because of the '0' number that is for the bank 100% of time)
You can download the project and see for yourself, you only require an Excel version posterior to 2003.