<P> Mobile phones began becoming video gaming platforms when Nokia installed Snake onto its line of mobile phones in 1997 (Nokia 6110). As the game gained popularity, every major phone brand offered "time killer games" that could be played in very short moments such as waiting for a bus . Mobile phone games early on were limited by the modest size of the phone screens that were all monochrome, the very limited amount of memory and processing power on phones, and the drain on the battery . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2007) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2007) (Learn how and when to remove this template message) </Td> </Tr> <P> The 2000s (decade) showed innovation on both consoles and PCs, and an increasingly competitive market for portable game systems . </P>

When was the first violent video game made