The article discusses the potential for realizing fractionalized topological phases in narrow gap semiconductor films using electrostatic engineering. The authors demonstrate that an external electrostatic superlattice potential can engineer topological flat minibands in these films, which can host correlated topological phases such as integer and fractional quantum anomalous Hall states and composite Fermi liquid phases at zero magnetic field. The setup involves a control layer with a periodic charge distribution, which imparts an electrostatic superlattice potential on an active layer of a narrow gap semiconductor film. Through a universal low-energy model and many-body calculations, the authors show that realistic material parameters can lead to robust integer and fractionalized topological states. The method is not tied to specific materials, offering flexibility and potential for a broad range of applications. The findings open new possibilities for engineered quantum materials, potentially providing greater flexibility and richness compared to existing moiré materials.The article discusses the potential for realizing fractionalized topological phases in narrow gap semiconductor films using electrostatic engineering. The authors demonstrate that an external electrostatic superlattice potential can engineer topological flat minibands in these films, which can host correlated topological phases such as integer and fractional quantum anomalous Hall states and composite Fermi liquid phases at zero magnetic field. The setup involves a control layer with a periodic charge distribution, which imparts an electrostatic superlattice potential on an active layer of a narrow gap semiconductor film. Through a universal low-energy model and many-body calculations, the authors show that realistic material parameters can lead to robust integer and fractionalized topological states. The method is not tied to specific materials, offering flexibility and potential for a broad range of applications. The findings open new possibilities for engineered quantum materials, potentially providing greater flexibility and richness compared to existing moiré materials.