Play Pacman in Microsoft Excel

Pacman for MS-Excel is an amazing feat of VBA programming. As far as I can tell (I was never very good at Pacman), its a faithful rendition of the original arcade classic, written in Excel VBA, complete with sound and a demo mode.

Excel Space Invaders, also available at the same page, is another excellent conversion from the arcade box to Excel. These are perfect for killing time in work environments where all you have is Microsoft Office to play with