Twist-angle two-dimensional systems,such as twisted bilayer graphene,twisted bilayer transition metal dichalcogen-ides,twisted bilayer phosphorene and their multilayer van der Waals heterostructures,exhibit novel and tunable properties due to the formation of Moiré superlattice and modulated Moiré bands.The review presents a brief venation on the develop-ment of “twistronics” and subsequent applications based on band engineering by twisting.Theoretical predictions followed by experimental realization of magic-angle bilayer graphene ignited the flame of investigation on the new freedom degree,twist-angle,to adjust (opto)electrical behaviors.Then,the merging of Dirac cones and the presence of flat bands gave rise to en-hanced light-matter interaction and gate-dependent electrical phases,respectively,leading to applications in photodetectors and superconductor electronic devices.At the same time,the increasing amount of theoretical simulation on extended twis-ted 2D materials like TMDs and BPs called for further experimental verification.Finally,recently discovered properties in twis-ted bilayer h-BN evidenced h-BN could be an ideal candidate for dielectric and ferroelectric devices.Hence,both the predic-tions and confirmed properties imply twist-angle two-dimensional superlattice is a group of promising candidates for next-gen-eration (opto)electronics.