  We study the freeze-in of gravitationally interacting dark matter in extra
dimensions. Focusing on a minimal dark matter candidate that only interacts
with the SM via gravity in a five-dimensional model we find that a large range
of dark matter and Kaluza-Klein graviton masses can lead to the observed relic
density. The preferred values of the masses and the strength of the interaction
make this scenario very hard to test in terrestrial experiments. However,
significant parts of the parameter space lead to warm dark matter and can be
tested by cosmological and astrophysical observations.
