CREATE TABLE table_name_24 (max__number_of_players VARCHAR, developer VARCHAR, main_title___alternate_title_s_ VARCHAR)
What is the maximum number of players for the sega game, hang-on (cartridge version)?
SELECT COUNT(max__number_of_players) FROM table_name_24 WHERE developer = "sega" AND main_title___alternate_title_s_ = "hang-on (cartridge version)"