The rewrite of Venn Diagrams with Unnecessary Lava is not quite done, but the puzzles are so much tighter and the program playable, that I've posted it as the primary branch.  

Things to work on:

• Level Completion Celebrations/Verifications
• Puzzle completion animation where the pips energize the crystal to make the portal.
• Venn Diagram transitions where one diagram becomes another.  Here's an example of this sort of transition: