The peace loving Glowbos live in black holes where they feed on the light absorbed there ... BUT calamity! A greedy space monster has invaded and taken all the light for himself. Luckily, the Bulboids arrive just in time to save the day by lighting the way. Prism offers fiendish puzzle challenges set in deep space. Help the Bulboids save the Glowbos by directing light onto them in 100 illuminated levels.