28% of Japanese play mobile games nearly every day

"Overall 27.6% of Japanese play almost every day. 31% are male and 27.1% are female. On the other hand 44% of Japanese barely play any mobile games. Therefore you can say that Japan has a solid base (28%) of heavy users who enjoy playing games every day and a 44% base of non gamers with virtually no interest."
Source: Research by Data Labo, reported by CyberMedia Blog, 15th September 2009