From the Back of the Book: d20 Monsters. Redefined. In the BESM d20 Monstrous Manual, d20-guru Ian Sturrock deconstructs over 100 of the major fantasy monster races to reveal their true point-based abilities and power levels. Additionally, combat tactics are presented for each monster, giving the GM and players insight into the creatures instincts and methods. Customized for your anime adventures, but ideal for any fantasy setting, the BESM d20 Monstrous Manual is the ideal creature toolkit and gaming aid.