Unoriented quivers with flavour

We discuss unoriented quivers with flavour that arise from D3-branes at local orbifold singularities, in the presence of Ω-planes and non-compact D7-branes. We produce a wide class of unoriented quiver gauge theories, including new instances of $\mathcal{N}$ = 1 superconformal theories. We then consider unoriented D-brane instanton corrections of both ‘gauge’ and ‘exotic’ kinds. In particular, we show that conformal symmetry can be dynamically broken via the generation of exotic superpotentials. Finally we discuss aspects of the recently proposed $\mathcal{N}$ = 1 remnant of $\mathcal{N}$ = 4 S-duality. We identify new candidate dual pairs for the $\mathbb{C}$ 3 / $\mathbb{Z}$ n series of unoriented quiver gauge theories with n odd