Which game engine is listed for Street Fighter IV?

The engine listed for Street Fighter IV is MT Framework.

MT Framework was Capcom’s proprietary technology platform during the late 2000s. Street Fighter IV used it to render its three-dimensional character models, stages, lighting, and visual effects while preserving gameplay on a traditional two-dimensional fighting plane.

That combination helped define Street Fighter IV’s distinctive look. The fighters and arenas were modeled in 3D, with stylized ink-brush effects inspired by sumi-e art, but movement and hit detection followed the side-view conventions of earlier Street Fighter games. The result is often described as 2.5D rather than a fully three-dimensional fighter.

MT Framework is sometimes mixed up with Unreal Engine 4, which powered Street Fighter V, or RE Engine, which powers Street Fighter 6. Capcom later replaced MT Framework with RE Engine for many newer projects, beginning with Resident Evil 7: Biohazard. Street Fighter IV was developed by Capcom and Dimps and first released in arcades in 2008 before reaching home platforms in 2009.