Rubik's Cube variants are different types of puzzles inspired by the original Rubik's Cube. These variants can have different shapes, sizes, and mechanisms, such as the 2x2 Cube, which has fewer pieces and is simpler to solve, or the 4x4 Cube, which adds complexity with more pieces and no fixed center pieces. Other popular variants include the Pyraminx, a tetrahedron-shaped puzzle, and the Megaminx, a dodecahedron with 12 sides. Each variant offers unique challenges and solving techniques, appealing to both beginners and experienced puzzlers looking for new experiences beyond the classic 3x3 Cube.