"The Smashing Pumpkins 1991–1998" is a promotional-only compilation album featuring the band's commercial singles from their first four studio albums. It also includes soundtrack-only tracks "Drown" and "Eye," along with their cover of Fleetwood Mac's "Landslide" from the collection "Pisces Iscariot." The album serves as a snapshot of The Smashing Pumpkins' mainstream success and showcases their versatility across various musical genres during this period.