Speedcubes are a popular type of Rubik's Cube that are designed for speedcubing, a competitive sport where players race to solve the puzzle as quickly as possible. There are many synonyms for speedcube that you may come across when researching this activity. Some common ones include performance cubes, competition cubes, and speed puzzles. Other terms you may encounter include race cubes, high-performance cubes, and quick cubes. These names all refer to the same type of Rubik's Cube that has been optimized for speed, with design features such as a smooth surface, durable construction, and light weight to help players achieve the fastest solve times possible.