The Halo Effect is a Swedish melodic death metal band from Gothenburg. Former In Flames members Jesper Strömblad, Niclas Engelin, Peter Iwers and Daniel Svensson formed it with vocalist Mikael Stanne (Dark Tranquillity). The aim was a return to the 1990s Gothenburg sound: sharp guitar melodies, fast drums, growls. Debut Days of the Lost (2022) came out on Nuclear Blast; the second album March of the Unheard followed in January 2025.
On 10 January 2025 the second album March of the Unheard arrived via Nuclear Blast; lead single Detonate had landed in September 2024.
In November 2025 the covers EP We Are Shadows was released.
