The name “Table Realms” relates to several things - The IDE, the mobile app, and the core platform being the first few that spring readily to mind.
As an easier way of explaining the core platform concept, I’d like you to imagine a bunch of lego bricks, and the large flat surface they all clip onto. That surface is the Table Realms core platform, and the bricks are the additional plugins for Playcanvas, Unity, Construct, and other game development tools.