Hi there Sonja - the original graph data science sandbox was retired because we needed a richer dataset to help teach users on certain facets of GDS. At the same time, when GDS 2.0 came out, it created some backwards incompatibilities which pushed us to upgrade the Sandbox.

The old dataset you're referring to (Game of Thrones) you can still access here, outside of Sandbox. We've provided all of the materials needed to do exactly what Sandbox was doing, in this repo.

Hope this helps