If we have translated everything properly, we think the basics is similar to kickball. Galaxy Ball is designed to help the participant explore new galaxies and to return to the home galaxy safely. The teams advance from Galaxy to Galaxy, picking up points along the way before time runs out on play. As they travel along, they have to watch out for other aliens who do not want them to get home and will try to vaporize them with their slime weapons and large particle throwers. We translated these to be water balloons and being struck by the ball in play.
Play starts in a counterclockwise direction but once in open space can proceed in any direction.
Team members are spaced in quadrants around the playing field. They can use the large particle weapons, one for each team, to try and vaporize your ship as you move though space. The particle weapon can be passed from team member to team member in order to gain an advantage. Other team members have been placed outside the playing area and are waiting to use their slime weapons. Participants hit by slime weapons and large particles when not in a safe area are out and go to the end of the line and wait for their next turn.