Shapeshifter is the second studio album by American alternative rock band Marcy Playground, released on November 2, 1999, by Capitol Records.

"[16] Rolling Stone determined that "rather than build on the promise of Marcy Playground's amateurish fun, the boys cling too tightly to watered-down grunge riffs.

"[18] The Los Angeles Times concluded that "the guitars are a little louder and the melodies more forceful, but Wozniak's sense of wonder is intact, which makes Shapeshifter a loopy pleasure.

"[19] The Boston Globe stated that Wozniak "writes inviting melodies that slide smoothly between folk-rock and electric hard-rock peaks.

"[21] The Edmonton Journal deemed the album "doleful, dotty rock," writing that it is "nowhere near as lethargic as Marcy's first disc.