Tsunami-HySEA is the numerical model of the HySEA family specifically designed for quake generated tsunami simulations. It combines robustness, reliability and good accuracy in a model based on a GPU faster than real time (FTRT) implementation. Tsunami-HySEA model implements in the same code the three parts of an earthquake generated tsunami: generation, propagation, and coastal inundation. In the generation stage, Okada's fault deformation model (Okada, 1985) is used to predict the initial bottom deformation that is transmitted instantaneously to the sea surface generating the tsunami wave. This method assumes that an earthqueake can be regarded as the rupture of a single fault plane. This fault is described by a series of parameters, comprising dip angle, strike angle, rake angle, fault width, fault length, and fault depth. Tsunami-HySEA can combine several fault planes to model the complete seafloor deformation. Moreover, each fault could be applied at different time steps to simulate the full rupture time.