Ciphers based on rotor machines were the state-of-the-art in the mid-1900s, with arguably the most famous being the German Enigma. We have found that students have great interest in the Enigma and its cryptanalysis, so we created our own rotor cipher that is simulated with shifting tables and can be cryptanalyzed. Ours and the historic rotor ciphers are based on rotating wheels that change the encryption with each character encrypted. Our cipher is easily programmed or can be simulated in Excel for students with less experience, and its cryptanalysis leads to interesting structure and the re-creation of the rotors.