The game works best using digits that look similar ... Test your friends' wits by copying and pasting the image above into your WhatsApp chats. Another one for the brain trainers out there ...

The innovation in question is what WWF claims to be the world’s first automated WhatsApp adventure game, Tree of Hope, which aims to make more people aware of the need to protect natural areas.

The game uses simple WhatsApp messages and an artificial intelligence chatbot to help Singaporeans and tourists find hidden gems in the city’s many neighbourhoods, including Tiong Bahru ...