Structure of the dark matter (DM) and gaseous cosmic web at z = 2 in EAGLE (top row) and TNG100 (bottom row). The layout is analogous to Fig. 15; the six panels show the same 50 × 50 cMpc field, with a projection depth of 5 cMpc. DM density is shown in the left-hand panels, gas density in the middle, and gas temperature on the right. While the DM structure is consistent across both simulations, the gas shows a more diffuse structure in EAGLE with a hotter temperature across most of the field. In contrast to z = 0, both EAGLE and TNG100 clearly predict the existence of cold gas in the centre of the filaments, as discussed in the text.