Objective
Four cooperative agents (two per side) learn to keep a glowing ball alive by volleying it over the central net. The ball now bounces off side walls (damped) for longer rallies.
Fitness rewards long rallies, clean upward hits, coordinated multi-player touches, and safe net clears. Minor penalties apply for net clips and stalling.
Use the sliders to launch multiple balls at once or change the ball size for different challenge levels.