Virtual Merlin: The Electronic Wizard Reborn
By James Grahame
Virtual Merlin is a Windows-based emulation of Parker Brother's Merlin handheld game. It sold an astounding five million units in 1980, which was incredible for a pointy-edged toy that resembled a Cylon telephone handset.
Instead of numbers, Merlin featured a matrix of eleven back-lit touch-sensitive buttons that were used to play six mind-numbing games including tic-tac-toe, blackjack, and music machine. It had a built-in speaker that produced a variety of bleeps and bloops.
An updated version of the unit was introduced by Milton Bradley in the late 1990s, but it utterly failed to impress the Game Boy generation.
The Virtual Merlin software hasn't been updated since the late 20th century, but honestly there isn't much that needed updating anyway. You'll also need the manual [pdf] to figure out what's going on.