Random Planets, Gaseous and Terrestrial, certainly overdo it with the title of "Random". Most rocky planets tend to spawn with crazy axial tilts and spin times of up to entire years. You can never get a rocky planet with a temperate sea level. They usually spawn with either no water or spawn being composed of over 50% water!
They also spawn lower than Absolute Zero sometimes.
And Gas Giants are even weirder. They never spawn over 0.04 Jupiter masses, which is REALLY tiny. They are also always either Brown and White or Blue and White, nothing else.