<Table> Game Boy <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Manufacturer </Th> <Td> Nintendo </Td> </Tr> <Tr> <Th> Product family </Th> <Td> Game Boy line </Td> </Tr> <Tr> <Th> Type </Th> <Td> Handheld game console </Td> </Tr> <Tr> <Th> Generation </Th> <Td> Fourth generation </Td> </Tr> <Tr> <Th> Release date </Th> <Td> <Ul> <Li> JP: April 21, 1989 </Li> <Li> NA: July 31, 1989 </Li> <Li> EU: September 28, 1990 </Li> <Li> BR: April, 1994 </Li> <Li> RUS: 1995 </Li> <Li> FRY: 1994 </Li> </Ul> </Td> </Tr> <Tr> <Th> Retail availability </Th> <Td> 1989--2003 </Td> </Tr> <Tr> <Th> Introductory price </Th> <Td> Game Boy: ¥? / US $89.95 / AU $? </Td> </Tr> <Tr> <Th> Discontinued </Th> <Td> March 23, 2003 </Td> </Tr> <Tr> <Th> Units sold </Th> <Td> Worldwide: 118.69 million (including Game Boy (Play it Loud!), Game Boy Pocket, Game Boy Light and Color units) </Td> </Tr> <Tr> <Th> Media </Th> <Td> ROM cartridge ("Game Pak") </Td> </Tr> <Tr> <Th> CPU </Th> <Td> Sharp LR35902 core @ 4.19 MHz </Td> </Tr> <Tr> <Th> Display </Th> <Td> LCD 160x144 pixels, 47x43 mm </Td> </Tr> <Tr> <Th> Best - selling game </Th> <Td> Tetris, 30.26 million (pack - in / separately). </Td> </Tr> <Tr> <Th> Predecessor </Th> <Td> Game & Watch </Td> </Tr> <Tr> <Th> Successor </Th> <Td> Game Boy Pocket (redesign) Game Boy Light (redesign) Game Boy Color (successor) </Td> </Tr> </Table> <Tr> <Th> Manufacturer </Th> <Td> Nintendo </Td> </Tr>

When did the original game boy come out