Background Simulation has been a part of medical education throughout history as a way for medical students to bring together medical theory and the practice of procedures. It was not until aviation proved that simulation actually can prevent accidents drastically. The medical community began, therefore, to further develop and implement simulation into the education of both doctors and nurses. Although simulation plays a large role in the education of nursing students, the roll of simulation on registered nurses is not fully understood. Aim The aim of this study was to describe the potential importance of simulation for registered nurse’s competence. Method Two scientific literature databases were used to gather both qualitative and quantitative literature. Results The results highlight simulations potential to provide nurses opportunity to increase their medical and care competence. Simulation gives an opportunity for nurses to reflect and provides a sense of comfort and security during technical procedures. Nurses also gain knowledge about evidence best practices as well as an increased motivation to continue learning and developing their skills, both technical and non-technical. Conclusion In conclusion simulation seems to be a needed intervention for registered nurses to improve upon clinical skills and knowledge, which in turn can increase patient safety as well as the quality of care.