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We present population synthesis calculations of the Tidal Downsizing (TD)hypothesis for planet formation. Our models address the following observations:(i) most abundant planets being Super Earths; (ii) cores more massive than$\sim 5-15 M_\oplus$ are enveloped by massive atmospheres; (iii) the frequencyof occurrence of close-in gas giant planets correlates strongly withmetallicity of the host star; (iv) no such correlation is found for sub-Neptuneplanets; (v) presence of massive cores in giant planets; (vi) gas giant planetsare over-abundant in metals compared to their host stars; (vii) thisover-abundance decreases with planet's mass; (viii) a deep valley in the planetmass function between masses of $\sim 10-20 M_\oplus$ and $\sim 100 M_\oplus$.A number of observational predictions distinguish the model from CoreAccretion: (a) composition of the massive cores is always dominated by rocksnot ices; (b) the core mass function is smooth with no minimum at $\sim 3M_\oplus$ and has no ice-dominated cores; (c) gas giants beyond 10 AU areinsensitive to the host star metallicity; (d) objects more massive than $\sim10 M_{\rm Jup}$ do not correlate or even anti-correlate with metallicity. Thelatter prediction is consistent with observations of low mass stellarcompanions. TD can also explain formation of planets in close binary systems.TD model is a viable alternative to the Core Accretion scenario in explainingmany features of the observed population of exoplanets.

Tidal Downsizing Model. III. Planets from sub-Earths to Brown Dwarfs: structure and metallicity preferences