Visual impression of a subset of gas quantities through the simulated volumes for the fiducial TNG (upper panels), TNG-CR (centre panels) and TNG-CR-NF (lower panels) runs. From left to right, we show temperature, magnetic field strength, (total) pressure, and metallicity. All images extend ∼37 Mpc along the plane and the perpendicular direction, i.e., through the entire (z = 0) simulated volume, and scale bars in all panels correspond to 15 Mpc. The large-scale structure of temperature and pressure is similar between the three runs, but for the lack of hot, rarified bubbles around massive galaxies in TNG-CR. The runs differ significantly in the other quantities, with lower levels of magnetization and metal enrichment of halo gas in the two CR runs as compared to TNG. The similarity in total pressure despite weaker field strengths, implying lower levels of magnetic pressure, shows that the nonthermal support by CRs is significant.