Temporal evolution of fundamental properties of the simulated planets with different metallicities and cloudy atmospheres. The colours represent different masses, where the colour code is given in the bottom left panel. The two squares in the top left panel indicate the luminosity of Jupiter and Saturn. Solid lines correspond to a cloud-free atmosphere with solar metallicity, dashed lines correspond to an atmosphere with clouds (f_sed = 0.5) and solar metallicity (as in Fig. 6), dotted lines correspond to a cloud-free atmosphere with a metallicity [M/H] = 0.6, all of them using the petitCODE model. Dash-dotted lines indicate a cloud-free atmosphere with a metallicity [M/H] = 0.6 from the HELIOS grid. For better visibility, three resp. two planets are not shown in the entropy resp. radius plot. The horizontal lines at 100 and 150 K in the T_eff plot show the lower limit of the HELIOS and petitCODE grid, respectively. The tracks are shown as long as the planet is evolving on the atmospheric grid.