Blocs has been developed alongside University of Surrey for practising and recording spatial ability. Questions in this format be created as with all other oodlü question types, but Blocs can also be played in "freeform mode" in the "Other Stuff" area of oodlu.
Find out more about the project on their project website.
Here is an overview of how it works:
We very much look forward to hearing how you get on with Blocs.
You can try the public version here: https://oodlu.org/share-app/blocs