Calculated matter and halo power spectra from the FORGE simulation suite in the mass bin 10^12.7h⁻¹ M_⊙ < M_halo < 10^13.2h⁻¹ M_⊙. The solid lines represent the reference ΛCDM simulations, while the dashed lines are the results of the nDGP simulations. Top left: Real-space power spectra for dark matter. The dots above the solid lines highlight the locations where the power spectrum is estimated. Top right: Real-space power spectra for haloes. Bottom left: Monopole of the halo power spectrum in redshift space. The shaded region shows the calculated variance of the monopole of the ΛCDM halo power spectrum at redshift z = 0. Bottom right: Quadrupole of the halo power spectrum in redshift space. The shaded region represents the calculated variance of the quadrupole of the ΛCDM halo power spectrum at redshift z = 0.