According to Official Guinness Records,
The longest videogames marathon playing a mobile phone game lasted 24 hours 10 minutes, and was achieved by Paul Dahlhoff (Germany), Martin Fornleitner, Hans Peter Glock and Stefan Reichspfarrer (all Austria) who played on Sony Ericsson Xperia Play (TM) handsets in Vienna, Austria, from 19 - 20 August 2011.Each participant played a different game: Reichspfarrer played Rainbow Six (Ubisof, 2011), Fornleitner played Minecraft (Notch, 2010), Dahlhoff played Pro Evolution Soccer 2011 (Konami, 2011) and Glock played Dungeon Defenders (Trendy Entertainment, 2011).
For a complete list of 2011 records, please visit 2011 Guinness Records in Austria.