I opened the new button to create a new simulation, and I selected a random exoplanet, the planet's name is HD 74156 c, it is 8 x the mass of Jupiter and has a radius of 1.64 x that of Jupiter, it is one of the largest planets known, but, somehow, it has a rocky texture, I'm starting to believe that rocky Jupiters exist, though they must be very rare, if it's a bug, then it must be a cool one, if rocky Jupiters exist, then Jupiters with extreme densities must be terrestrials, making them extreme Mega Earths, and after all, Kepler-10 c was the first Mega Earth discovered, and it's only 2.35 x Earth's radius, but has an astounding 17.2 Earth masses, more than Neptune.
Kepler-22b is larger, but we're not sure whether it's terrestrial or neptunian, it could be both.