Blocksworld was a physics-based 3D sandbox video game developed by Linden Lab originally for the iPad on July 6, 2013. It was later released for the iPhone on 2016, and later, via Steam on September 25, 2017. As of 2020, Blocksworld is absent from Linden Lab's website (excluding previous press releases), and servers were fully shut down on June 17, 2020. It was subsequently removed from the App Store afterwards, and was later pulled from Steam on July 2, 2020 it's funny coding block game