dʒˈæm mˈoʊd ɐ sˈiːkɹᵻt mˈoʊd hɐz ˈɛkstɹə vˈɪʒuːəl ɪfˈɛkts ænd bˈækɡɹaʊnd ˈɔːdɪˌoʊ klˈɪps wɪð nˈoʊ tʃˈeɪndʒ tə ɡˈeɪmpleɪ.
Jam mode (a secret mode) has extra visual effects and background audio clips with no change to gameplay.