The gamers are competing for a total charity prize pool of $10m.
The championship has been viewed over 35 million times on social media platforms, while the live broadcast has garnered nearly 5 million views and is presented in seven languages.
The event, organised by the Saudi Arabian Federation for Electronic and Intellectual Sports (SAFEIS), has technical support from ESL, the world’s largest esports company.
Prince Faisal bin Bandar bin Turki, president of SAFEIS, said: “It’s inspiring to see Gamers Without Borders and Saudi Arabia connect the global gaming community and help respond to Covid-19 through supporting these international charities.
“To have brought together such a huge number of global gamers to watch, game, donate and learn in just four weeks really shows the power that e-sports possesses.