After Dark is a series of computer screensaver software. Berkeley Systems and Sierra Interactive released After Dark Games for Windows and Macintosh platfoms modeled after the screensavers. These games included Mowin' Maniac, Roof Rats, Solitaire, Toaster Run, Zapper, Hula Girl, Bad Dog 911, Fish Shtix, Foggy Boxes, MooShu, and Rodger Dodger. A version of the After Dark Games is available online for Mac OS X. To play, you need a PowerPC computer with OS X.
This is not a free game but you can get the demo here: http://www.softlookup.com/
You can also buy it there.