Judas Ø is a collection of B-sides and rarities by the Smashing Pumpkins. It was packaged as a bonus disc in a limited-edition printing of Rotten Apples, their greatest hits collection. The songs are largely from the Mellon Collie and the Infinite Sadness, Adore, and Machina/The Machines of God recording sessions, and some tracks can be found on The Aeroplane Flies High, and Machina II/The Friends & Enemies of Modern Music. Judas Ø is considered to be the sister album to Pisces Iscariot, a collection of B-sides and rarities from the Gish and Siamese Dream eras. Music critic Jim DeRogatis commented that Judas Ø is "superior to the rarities collection Pisces Iscariot because it reflects the tremendous musical and lyrical growth of the group from Adore through its untimely demise."