In thief you have to prove your skills. Trick your opponents and don't let yourself be caught. Hide yourself well. Clear your way if you have to. Raise a bank, break into the safe or find the diamond in the museum. If you have the prey then leave as fast as you can. Find secret passages and don't get lost! Find all the treasures and steal what you can get. Break out of prison. Prove all your skills and become a master thief. What are you waiting for?