 The game was written by Chris Stamper and graphics were designed by his brother , Tim Stamper . Pssst was one of the very few Spectrum games also available in ROM format for use with the Interface 2 , allowing " instantaneous " loading of the game ( the normal method of cassette loading could take several minutes ) . The game received positive reviews from two publications upon release , with critics mainly praising its presentation and gameplay . It was placed 40th on the " Best Selling Software " list by Personal Computer Games in December 1983 . 
