Because of the negative reception Raiden received as the main character of Metal Gear Solid 2, a series of stories were created involving Snake. Due to the low production value of these missions, there is no voiceover work. Instead, the plot is described in pages of dialog and text interspersed between gameplay, and several soundbites from the game are also reused for some of the characters (e.g., Meryl Silverburgh's "voice" being reused sound clips from Olga Gurlukovich and one of the Harrier pilots' "voice" being reused sound clips from Solidus Snake). The maps and backgrounds for the various levels likewise are also reused from Metal Gear Solid 2 for the same reasons as why there isn't voice work in the game. The missions are all fairly challenging; the player's Soliton Radar is disable