The United Nations children's agency (Unicef) has launched the first computer game in Kiswahili, aimed at halting the spread of HIV and Aids.
Players makes choices in virtual relationships
The game called "What would you do?" (Ungefanyaje?) takes players through various scenarios to explain the importance of prevention and testing.
The UN estimates that around 80% of all young people do not know how to protect themselves from Aids.
Africa accounts for most of the world's 2.3m children who are HIV-positive.
More than 100 million people speak Swahili across east African countries such as Kenya, Tanzania, Uganda and the Democratic Republic of Congo.
In the Unicef game, players choose from different options as two male and two female characters embark on relationships.