The rigid-molecule force field-based CSP performs well at reproducing many of the known crystal structures with low RMSD and good energetic ranking, although the results are more variable than when similar methods are applied for non-EM molecular crystals. This demonstrates the power of a force field based model as a simple and fast method which can produce accurate predictions for crystal structures. Geometrically, the known crystal structures are reproduced well, with small RMSD in atomic positions. Only ATZ, DNIT, HBT and β-NTO have RMSD 30 values above 0.5 Å.