  We explore the non-commutative space-time to revive the idea that gamma-ray
excess in the galactic center can be the result of particle dark matter
annihilation. In the non-commutative theory, the photon spectrum is produced by
direct emission during this annihilation where a photon can be embed in the
final state together with other direct products in new vertices. In the various
configurations of dark matter phenomenology, we adopt the most common model
known as singlet scalar. Calculating the relevant aspects of the model, we can
obtain the photon flux in the galactic center. Comparing our numerical
achievements with experimental data reveals that non-commutative space-time can
be a reliable framework to explain the gamma-ray excess.
