The Inspire Foundation and Puttinu Cares have joined forces to organise a giant Water Balloon Fight Festival.
They said they expect some 3,000 people to battle, armed with copious quantities of balloon bombs.
100,000 seawater-filled balloons will be used, with participants allowed up to 50 water balloons.
The event will be held at Floriana football ground on August 30 with the proceeds going to Inspire, which works with children and adults with disabilities, and Puttinu Cares which is a caner support group focused on providing a holistic approach of care for families with children suffering from cancer.
The event starts at 5pm. Participation will be against €5 per game (50 balloons). Children €3 per game (30 balloons)