Including rules for customizing your teams with bionics and mutations, DreadBall Season 4 introduces four new teams to the Futuristic Sports Game and a crop of new and characterful MVPs! Season 4 introduces the Convicts, Asterian Kalyshi, Mechanites and the Kovossian Mutants to DreadBall! This is a supplement. You will need a copy of the Deadball game system.