Emergency Medicine Multiple Choice Questions (EM.MCQ) is the best tool for practicing, collecting and writing MCQs in emergency medicine. EM.MCQ is a multiple choice question database, editor and study tool. It includes over 700 MCQ covering topics in Emergency Medicine from major current texts. The user interface is easy and intuitive to use, allowing quick and efficient study. The range of question difficulties will suit medical students, residents and emergency medicine trainees. A full range of options is available to choose questions by question type (simple completion, multiple completion and true/false), difficulty and topic areas. They can be practiced in un-timed study or timed quizzes. EM.MCQ remembers which questions you get right and which ones you get wrong, assigning a greater difficulty to those questions incorrectly answered. In this way the difficulty rating for each question is constantly adjusted, allowing users to select and focus on problem areas. Images can be linked to the questions or notes of MCQs to add a visual component to the learning process. To avoid pattern recognition questions are presented in random sequence, and the order of question responses are also randomized. EM.MCQ incorporates simple completion, multiple completion type and true/false multiple choice type questions. In addition questions can be entered into the database as grid questions. Grid questions include 5 correct and 5 incorrect responses. From each grid question EM.MCQ can randomly generate 146 different multiple choice questions. The editing features allow users to add their own questions, edit existing questions, merge with databases made on other computers, add notes, references and perform spell checks. Study groups have a great opportunity to develop and pool questions.