Twin Spin is an online slot game developed by NetEnt. This game features a classic slot machine theme, with symbols such as cherries, bells, and lucky sevens appearing on the reels. However, Twin Spin has a unique gameplay mechanic where every spin starts with two adjacent reels that are linked together. These reels can expand to become three, four, or even five linked reels, giving players the chance to win big prizes. Twin Spin also features a wild symbol that can substitute for other symbols to create winning combinations. With its retro theme and innovative gameplay, Twin Spin is a popular choice for fans of online slots.