In the last few years, a lot of new design disciplines have appeared. The concept of design and its approaches have changed and expanded. Today, its core values go beyond aesthetics and concentrate on user-centered problem-solving techniques. To achieve this, design disciplines focus on establishing the foundations of the future. This is where speculative design comes in. The future is explored in many "what if?" scenarios. What if a change was needed? What if humans evolved? What if the situation were different? By creating scenarios around these "what if" questions with tangible and realistic objects, designers can produce an experience of that possible future. The term „speculative design“, although very important, is still unknown to many. This work aims to raise awareness of the concept and its importance in the design discipline. The paper will cover essential elements of design, methods of use, tools for making, method of making, advantages and disadvantages, examples of speculative design in the last few years, and research through a survey to find out how many people are familar with the term „speculative design“.