Cut the Rope is a physics-based puzzle video game for handheld gaming platforms. It was developed in 2010 by Russian developers ZeptoLab and is published by Chillingo. On iOS, it uses the Crystal and Game Center social networking services. On Android, it uses Scoreloop social networking services. In 2011, it was followed by a sequel, Cut the Rope: Experiments, published by ZeptoLab themselves.